diff --git a/games/tetris/bucket.c b/games/tetris/bucket.c
index 49e845e..5533b98 100644
--- a/games/tetris/bucket.c
+++ b/games/tetris/bucket.c
@@ -1,7 +1,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
-#include <inttypes.h>
+#include <stdint.h>
 #include "../../autoconf.h"
 #include "bucket.h"
 #include "piece.h"
diff --git a/games/tetris/bucket.h b/games/tetris/bucket.h
index a32cc54..0b4736c 100644
--- a/games/tetris/bucket.h
+++ b/games/tetris/bucket.h
@@ -1,7 +1,7 @@
 #ifndef BUCKET_H_
 #define BUCKET_H_
 
-#include <inttypes.h>
+#include <stdint.h>
 #include "../../autoconf.h"
 #include "piece.h"
 
diff --git a/games/tetris/highscore.c b/games/tetris/highscore.c
index fe96451..c1a39b9 100644
--- a/games/tetris/highscore.c
+++ b/games/tetris/highscore.c
@@ -1,6 +1,6 @@
 #include <string.h>
 #include <stdio.h>
-#include <inttypes.h>
+#include <stdint.h>
 #include "highscore.h"
 #include "../../config.h"
 #include "../../scrolltext/scrolltext.h"
diff --git a/games/tetris/input.c b/games/tetris/input.c
index 444169f..7aabfc6 100644
--- a/games/tetris/input.c
+++ b/games/tetris/input.c
@@ -1,15 +1,15 @@
 #include <stdlib.h>
+#include <stdint.h>
 #include <string.h>
-#include <inttypes.h>
 #include <assert.h>
-#include "../../config.h"
+#include "../../compat/pgmspace.h"
 #include "../../joystick/joystick.h"
-#include "../../util.h"
 #include "../../scrolltext/scrolltext.h"
-#include "input.h"
+#include "../../util.h"
+#include "../../config.h"
 #include "bearing.h"
+#include "input.h"
 
-#include "../../compat/pgmspace.h"
 #define WAIT(ms) wait(ms)
 #define PM(value) pgm_read_byte(&value)
 
@@ -86,7 +86,7 @@ void tetris_input_chatterProtect(tetris_input_t *pIn,
 
 	// amount of loop cycles a command is ignored after its button has been
 	// released (every command has its own counter)
-	static const uint8_t nInitialIgnoreValue[TETRIS_INCMD_NONE] PROGMEM =
+	static uint8_t const nInitialIgnoreValue[TETRIS_INCMD_NONE] PROGMEM =
 	{
 		TETRIS_INPUT_CHATTER_TICKS_LEFT,
 		TETRIS_INPUT_CHATTER_TICKS_RIGHT,
@@ -143,7 +143,7 @@ void tetris_input_chatterProtect(tetris_input_t *pIn,
 tetris_input_command_t tetris_input_mapCommand(tetris_bearing_t nBearing,
                                                tetris_input_command_t nCmd)
 {
-	const tetris_input_command_t nMapping[] =
+	tetris_input_command_t const nMapping[] =
 	{
 		TETRIS_INCMD_DOWN, TETRIS_INCMD_ROT_CW, TETRIS_INCMD_RIGHT,
 		TETRIS_INCMD_LEFT,
@@ -224,9 +224,10 @@ tetris_input_command_t tetris_input_queryJoystick(tetris_input_t *pIn)
 	// memorize current command (for detecting prolonged key presses)
 	pIn->cmdRawLast = cmdJoystick;
 
+	// remap command according to current bearing
 	tetris_input_command_t cmdReturn =
 			tetris_input_mapCommand(pIn->nBearing, cmdJoystick);
-	// remap command according to current bearing
+
 	return cmdReturn;
 }
 
@@ -420,7 +421,7 @@ void tetris_input_setLevel(tetris_input_t *pIn,
 	assert(pIn != NULL);
 	assert(nLvl <= TETRIS_INPUT_LEVELS - 1);
 
-	static const uint8_t nCycles[] PROGMEM = {TETRIS_INPUT_LVL_CYCLES};
+	static uint8_t const nCycles[] PROGMEM = {TETRIS_INPUT_LVL_CYCLES};
 
 	if (pIn->nLevel != nLvl)
 	{
diff --git a/games/tetris/input.h b/games/tetris/input.h
index 604280d..d8a2e02 100644
--- a/games/tetris/input.h
+++ b/games/tetris/input.h
@@ -1,7 +1,7 @@
 #ifndef INPUT_H_
 #define INPUT_H_
 
-#include <inttypes.h>
+#include <stdint.h>
 #include "bearing.h"
 
 /**
diff --git a/games/tetris/piece.c b/games/tetris/piece.c
index 9eae4ba..eafbebb 100644
--- a/games/tetris/piece.c
+++ b/games/tetris/piece.c
@@ -1,13 +1,9 @@
 #include <stdlib.h>
 #include <assert.h>
-#include <inttypes.h>
-#include "piece.h"
+#include <stdint.h>
 
-#ifdef __AVR__
-	#include <avr/pgmspace.h>
-#else
-	#define PROGMEM
-#endif
+#include "../../compat/pgmspace.h"
+#include "piece.h"
 
 
 /*****************************
@@ -26,6 +22,7 @@ tetris_piece_t *tetris_piece_construct(tetris_piece_shape_t s,
 	return p_piece;
 }
 
+
 void tetris_piece_destruct(tetris_piece_t *pPc)
 {
 	assert(pPc != NULL);
@@ -40,11 +37,12 @@ void tetris_piece_destruct(tetris_piece_t *pPc)
 uint16_t tetris_piece_getBitmap(tetris_piece_t *pPc)
 {
 	assert(pPc != NULL);
+	assert((pPc->angle < 4) && (pPc->shape < 7));
 
 	// Lookup table:
 	// A value in an array represents a piece in a specific angle (rotating
 	// clockwise from index 0).
-	static const uint16_t piece[][4] PROGMEM =
+	static uint16_t const piece[][4] PROGMEM =
 		{{0x0F00, 0x2222, 0x0F00, 0x2222},  // LINE
 		 {0x4E00, 0x4640, 0x0E40, 0x4C40},  // T
 		 {0x0660, 0x0660, 0x0660, 0x0660},  // SQUARE
@@ -53,44 +51,19 @@ uint16_t tetris_piece_getBitmap(tetris_piece_t *pPc)
 		 {0x6C00, 0x4620, 0x6C00, 0x4620},  // S
 		 {0xC600, 0x4C80, 0xC600, 0x4C80}}; // Z
 
-	#ifdef __AVR__
-		return pgm_read_word(&piece[pPc->shape][pPc->angle]);
-	#else
-		return piece[pPc->shape][pPc->angle];
-	#endif
+	return pgm_read_word(&piece[pPc->shape][pPc->angle]);
 }
 
 
 void tetris_piece_rotate(tetris_piece_t *pPc,
-                         tetris_piece_rotation_t r)
+                         tetris_piece_rotation_t nRotation)
 {
 	assert(pPc != NULL);
+	assert(nRotation < 2);
 
 	// we just rotate through the available angles in the given direction and
-	// make wrap arounds where appropriate
-	switch (r)
-	{
-	case TETRIS_PC_ROT_CW:
-		if (pPc->angle == TETRIS_PC_ANGLE_270)
-		{
-			pPc->angle = TETRIS_PC_ANGLE_0;
-		}
-		else
-		{
-			++pPc->angle;
-		}
-		break;
-	case TETRIS_PC_ROT_CCW:
-		if (pPc->angle == TETRIS_PC_ANGLE_0)
-		{
-			pPc->angle = TETRIS_PC_ANGLE_270;
-		}
-		else
-		{
-			--pPc->angle;
-		}
-		break;
-	}
+	// wrap around (via modulo) where appropriate
+	pPc->angle = (pPc->angle + ((nRotation == TETRIS_PC_ROT_CW) ? 1 : 3)) % 4;
 }
 
 
@@ -118,11 +91,7 @@ int8_t tetris_piece_getAngleCount(tetris_piece_t *pPc)
 {
 	assert(pPc != NULL);
 
-	static const int8_t angleCounts[] PROGMEM = {2, 4, 1, 4, 4, 2, 2};
+	static int8_t const angleCounts[] PROGMEM = {2, 4, 1, 4, 4, 2, 2};
 
-#ifdef __AVR__
-	return pgm_read_word(&angleCounts[pPc->shape]);
-#else
-	return angleCounts[pPc->shape];
-#endif
+	return pgm_read_byte(&angleCounts[pPc->shape]);
 }
diff --git a/games/tetris/piece.h b/games/tetris/piece.h
index f7283ba..502c869 100644
--- a/games/tetris/piece.h
+++ b/games/tetris/piece.h
@@ -1,7 +1,7 @@
 #ifndef TETRIS_PIECE_H_
 #define TETRIS_PIECE_H_
 
-#include <inttypes.h>
+#include <stdint.h>
 
 /**
  * \defgroup TetrisPieceTypes Piece: Data types
@@ -17,7 +17,7 @@ typedef enum tetris_piece_shape_t
 {
 	TETRIS_PC_LINE,   /**< the I shaped brick */
 	TETRIS_PC_T,      /**< the T shaped brick */
-	TETRIS_PC_SQUARE, /**< the sqare shaped brick */
+	TETRIS_PC_SQUARE, /**< the square shaped brick */
 	TETRIS_PC_L,      /**< the L shaped brick */
 	TETRIS_PC_LBACK,  /**< the reverse L shaped brick */
 	TETRIS_PC_S,      /**< the S shaped brick */
@@ -101,10 +101,10 @@ uint16_t tetris_piece_getBitmap(tetris_piece_t *pPc);
 /**
  * rotates a piece
  * @param pPc piece to rotate
- * @param r type of rotation (see tetris_piece_rotation_t)
+ * @param nRotation type of rotation (see tetris_piece_rotation_t)
  */
 void tetris_piece_rotate(tetris_piece_t *pPc,
-                         tetris_piece_rotation_t r);
+                         tetris_piece_rotation_t nRotation);
 
 
 /**
diff --git a/games/tetris/tetris_main.c b/games/tetris/tetris_main.c
index 33be32d..058bdad 100644
--- a/games/tetris/tetris_main.c
+++ b/games/tetris/tetris_main.c
@@ -1,7 +1,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
-#include <inttypes.h>
+#include <stdint.h>
 
 #include "tetris_main.h"
 #include "variants.h"
@@ -12,7 +12,7 @@
 #include "highscore.h"
 
 
-void tetris_main(const tetris_variant_t *const pVariantMethods)
+void tetris_main(tetris_variant_t const *const pVariantMethods)
 {
 	// get view dependent dimensions of the bucket
 	int8_t nWidth;
diff --git a/games/tetris/tetris_main.h b/games/tetris/tetris_main.h
index aeb5602..6e7298e 100644
--- a/games/tetris/tetris_main.h
+++ b/games/tetris/tetris_main.h
@@ -8,7 +8,7 @@
  * runs the tetris game
  * @param pVariantMethods struct of function pointers for a game variant
  */
-void tetris_main(const tetris_variant_t *const pVariantMethods);
+void tetris_main(tetris_variant_t const *const pVariantMethods);
 
 
 #endif /* TETRIS_MAIN_H_ */
diff --git a/games/tetris/variant_bastet.c b/games/tetris/variant_bastet.c
index 236f87b..3d5fdac 100644
--- a/games/tetris/variant_bastet.c
+++ b/games/tetris/variant_bastet.c
@@ -1,12 +1,10 @@
-#include <inttypes.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
-
 #include "../../random/prng.h"
 #include "../../compat/pgmspace.h"
 #include "../../menu/menu.h"
-#include "variant_bastet.h"
 #include "variants.h"
 #include "tetris_main.h"
 #include "input.h"
@@ -14,6 +12,14 @@
 #include "bucket.h"
 #include "bearing.h"
 #include "input.h"
+#include "variant_bastet.h"
+
+
+/***********
+ * defines *
+ ***********/
+
+#define TETRIS_BASTET_HEIGHT_FACTOR 5
 
 
 /***************************
@@ -21,31 +27,17 @@
  ***************************/
 
 /**
- * resets the array for the column heights
- * @param pBastet bastet instance whose array should be reset
- * @param nStart start index
- * @param nStop stop index
- */
-void tetris_bastet_clearColHeights(tetris_bastet_variant_t *pBastet,
-                                   int8_t nStart,
-                                   int8_t nStop)
-{
-	for (int i = nStart; i <= nStop; ++i)
-	{
-		pBastet->pColHeights[i] = 0;
-	}
-}
-
-
-/**
- * calculate the actual column heights (without any prediction)
+ * calculate the score impact of every column (without any prediction)
  * @param pBastet bastet instance whose column heights should be calculated
  */
-void tetris_bastet_calcActualColHeights(tetris_bastet_variant_t *pBastet)
+void tetris_bastet_calcActualColumnsScoreImpact(tetris_bastet_variant_t *pBastet)
 {
+	// retrieve sane start and stop values for the column and row indices
 	int8_t nWidth = tetris_bucket_getWidth(pBastet->pBucket);
 	int8_t nStartRow = tetris_bucket_getHeight(pBastet->pBucket) - 1;
 	int8_t nStopRow = tetris_bucket_getFirstMatterRow(pBastet->pBucket);
+
+	// calculate the column heights of the actual bucket configuration
 	for (int8_t y = nStartRow; y >= nStopRow; --y)
 	{
 		uint16_t nDumpRow = tetris_bucket_getDumpRow(pBastet->pBucket, y);
@@ -54,11 +46,16 @@ void tetris_bastet_calcActualColHeights(tetris_bastet_variant_t *pBastet)
 		{
 			if ((nDumpRow & nColMask) != 0)
 			{
-				pBastet->pActualColHeights[x] = nStartRow - y + 1;
+				pBastet->pActualColScoreImpact[x] = nStartRow - y + 1;
 			}
 			nColMask <<= 1;
 		}
 	}
+	// calculate the score impact of every column
+	for (int x = 0; x < nWidth; ++x)
+	{
+		pBastet->pActualColScoreImpact[x] *= TETRIS_BASTET_HEIGHT_FACTOR;
+	}
 }
 
 
@@ -111,8 +108,8 @@ uint8_t tetris_bastet_calcPredictedColHeights(tetris_bastet_variant_t *pBastet,
  * @param pa the first value to compare
  * @param pb the second value to compare
  */
-int tetris_bastet_qsortCompare(const void *pa,
-                               const void *pb)
+int tetris_bastet_qsortCompare(void const *pa,
+                               void const *pb)
 {
 	tetris_bastet_scorepair_t *pScorePairA = (tetris_bastet_scorepair_t *)pa;
 	tetris_bastet_scorepair_t *pScorePairB = (tetris_bastet_scorepair_t *)pb;
@@ -158,7 +155,7 @@ void tetris_bastet(void)
  * construction/destruction *
  ****************************/
 
-const tetris_variant_t tetrisBastetVariant =
+tetris_variant_t const tetrisBastetVariant =
 {
 	&tetris_bastet_construct,
 	&tetris_bastet_destruct,
@@ -189,9 +186,8 @@ void *tetris_bastet_construct(tetris_bucket_t *pBucket)
 	pBastet->pBucket = pBucket;
 
 	int8_t nWidth = tetris_bucket_getWidth(pBastet->pBucket);
-	pBastet->pActualColHeights = (int8_t*) calloc(nWidth, sizeof(int8_t));
+	pBastet->pActualColScoreImpact = (int8_t*) calloc(nWidth, sizeof(int8_t));
 	pBastet->pColHeights = (int8_t*) calloc(nWidth, sizeof(int8_t));
-	tetris_bastet_clearColHeights(pBastet, 0, nWidth - 1);
 
 	return pBastet;
 }
@@ -202,9 +198,9 @@ void tetris_bastet_destruct(void *pVariantData)
 	assert(pVariantData != 0);
 	tetris_bastet_variant_t *pBastetVariant =
 			(tetris_bastet_variant_t *)pVariantData;
-	if (pBastetVariant->pActualColHeights != NULL)
+	if (pBastetVariant->pActualColScoreImpact != NULL)
 	{
-		free(pBastetVariant->pActualColHeights);
+		free(pBastetVariant->pActualColScoreImpact);
 	}
 	if (pBastetVariant->pColHeights != NULL)
 	{
@@ -268,11 +264,11 @@ int16_t tetris_bastet_evaluateMove(tetris_bastet_variant_t *pBastet,
 	{
 		if ((x >= nStartCol) && (x <= nStopCol))
 		{
-			nScore -= 5 * pBastet->pColHeights[x];
+			nScore -= TETRIS_BASTET_HEIGHT_FACTOR * pBastet->pColHeights[x];
 		}
 		else
 		{
-			nScore -= 5 * pBastet->pActualColHeights[x];
+			nScore -= pBastet->pActualColScoreImpact[x];
 		}
 	}
 
@@ -283,7 +279,7 @@ int16_t tetris_bastet_evaluateMove(tetris_bastet_variant_t *pBastet,
 void tetris_bastet_evaluatePieces(tetris_bastet_variant_t *pBastet)
 {
 	// precache actual column heights
-	tetris_bastet_calcActualColHeights(pBastet);
+	tetris_bastet_calcActualColumnsScoreImpact(pBastet);
 	int8_t nWidth = tetris_bucket_getWidth(pBastet->pBucket);
 	tetris_piece_t *pPiece = tetris_piece_construct(TETRIS_PC_LINE,
 			TETRIS_PC_ANGLE_0);
@@ -295,6 +291,7 @@ void tetris_bastet_evaluatePieces(tetris_bastet_variant_t *pBastet)
 		for (int8_t nAngle = TETRIS_PC_ANGLE_0; nAngle < nAngleCount; ++nAngle)
 		{
 			tetris_piece_setAngle(pPiece, nAngle);
+			tetris_piece_rotate(pPiece, TETRIS_PC_ROT_CW);
 			for (int8_t nCol = -3; nCol < nWidth; ++nCol)
 			{
 				int16_t nScore = tetris_bastet_evaluateMove(pBastet,
@@ -302,8 +299,8 @@ void tetris_bastet_evaluatePieces(tetris_bastet_variant_t *pBastet)
 				nMaxScore = nMaxScore > nScore ? nMaxScore : nScore;
 			}
 		}
-		pBastet->nPieceScores[nBlock].shape = nBlock;
-		pBastet->nPieceScores[nBlock].nScore = nMaxScore;
+		pBastet->nPieceScore[nBlock].shape = nBlock;
+		pBastet->nPieceScore[nBlock].nScore = nMaxScore;
 	}
 	tetris_piece_destruct(pPiece);
 }
@@ -320,11 +317,11 @@ tetris_piece_t* tetris_bastet_choosePiece(void *pVariantData)
 	// perturb score (-2 to +2) to avoid stupid tie handling
 	for (uint8_t i = 0; i < 7; ++i)
 	{
-		pBastet->nPieceScores[i].nScore += random8() % 5 - 2;
+		pBastet->nPieceScore[i].nScore += random8() % 5 - 2;
 	}
 
 	// sort pieces by their score in ascending order
-	qsort(pBastet->nPieceScores, 7, sizeof(tetris_bastet_scorepair_t),
+	qsort(pBastet->nPieceScore, 7, sizeof(tetris_bastet_scorepair_t),
 		&tetris_bastet_qsortCompare);
 
 	// new "preview" piece (AKA "won't give you this one")
@@ -333,18 +330,26 @@ tetris_piece_t* tetris_bastet_choosePiece(void *pVariantData)
 		tetris_piece_destruct(pBastet->pPreviewPiece);
 	}
 	pBastet->pPreviewPiece =
-			tetris_piece_construct(pBastet->nPieceScores[6].shape,
+			tetris_piece_construct(pBastet->nPieceScore[6].shape,
 					TETRIS_PC_ANGLE_0);
 
 	tetris_piece_t *pPiece = NULL;
-	const uint8_t nPercent[4] = {75, 92, 98, 100};
+	uint8_t const nPercent[4] = {75, 92, 98, 100};
 	uint8_t nRnd = rand() % 100;
 	for (uint8_t i = 0; i < 4; ++i)
 	{
 		if (nRnd < nPercent[i])
 		{
-			pPiece = tetris_piece_construct(pBastet->nPieceScores[i].shape,
-					TETRIS_PC_ANGLE_0);
+			// circumvent a trick where the line piece consecutively gets the
+			// lowest score although it removes a line every time
+			if ((pBastet->nPieceScore[i].shape == TETRIS_PC_LINE) &&
+					(pBastet->nPieceScore[i].nScore >= -28000))
+			{
+				i += ((i == 0) ? 1 : -1);
+			}
+
+			pPiece = tetris_piece_construct(pBastet->nPieceScore[i].shape,
+						TETRIS_PC_ANGLE_0);
 			break;
 		}
 	}
diff --git a/games/tetris/variant_bastet.h b/games/tetris/variant_bastet.h
index 0cb2965..b06a841 100644
--- a/games/tetris/variant_bastet.h
+++ b/games/tetris/variant_bastet.h
@@ -1,7 +1,7 @@
 #ifndef BAST_H_
 #define BAST_H_
 
-#include <inttypes.h>
+#include <stdint.h>
 #include "variants.h"
 #include "bucket.h"
 #include "piece.h"
@@ -32,20 +32,20 @@ tetris_bastet_scorepair_t;
 
 typedef struct tetris_bastet_variant_t
 {
-	uint16_t nScore;                           /** score of the player */
-	uint16_t nHighscore;                       /** highscore */
-	uint16_t nHighscoreName;                   /** champion's initials */
-	uint8_t nLevel;                            /** current level */
-	uint16_t nLines;                           /** number of completed lines */
-	tetris_piece_t *pPreviewPiece;             /** the piece for the preview */
-	tetris_bucket_t *pBucket;                  /** bucket to be examined */
-	int8_t *pActualColHeights;                 /** actual columns heights */
-	int8_t *pColHeights;                       /** predicted column heights */
-	tetris_bastet_scorepair_t nPieceScores[7]; /** score for every piece */
+	uint16_t nScore;                          /** score of the player */
+	uint16_t nHighscore;                      /** highscore */
+	uint16_t nHighscoreName;                  /** champion's initials */
+	uint8_t nLevel;                           /** current level */
+	uint16_t nLines;                          /** number of completed lines */
+	tetris_piece_t *pPreviewPiece;            /** the piece for the preview */
+	tetris_bucket_t *pBucket;                 /** bucket to be examined */
+	int8_t *pActualColScoreImpact;            /** score impact of every column*/
+	int8_t *pColHeights;                      /** predicted column heights */
+	tetris_bastet_scorepair_t nPieceScore[7]; /** score for every piece */
 }
 tetris_bastet_variant_t;
 
-const tetris_variant_t tetrisBastetVariant;
+tetris_variant_t const tetrisBastetVariant;
 
 
 /****************************
diff --git a/games/tetris/variant_fp.c b/games/tetris/variant_fp.c
index 1d19546..5168ca0 100644
--- a/games/tetris/variant_fp.c
+++ b/games/tetris/variant_fp.c
@@ -1,7 +1,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
-#include <inttypes.h>
+#include <stdint.h>
 
 #include "../../random/prng.h"
 #include "../../compat/pgmspace.h"
@@ -44,7 +44,7 @@ void tetris_fp(void)
  * construction/destruction *
  ****************************/
 
-const tetris_variant_t tetrisFpVariant =
+tetris_variant_t const tetrisFpVariant =
 {
 	&tetris_std_construct,
 	&tetris_std_destruct,
diff --git a/games/tetris/variant_fp.h b/games/tetris/variant_fp.h
index 6164c25..d3a5b80 100644
--- a/games/tetris/variant_fp.h
+++ b/games/tetris/variant_fp.h
@@ -1,7 +1,7 @@
 #ifndef VARIANT_FP_H_
 #define VARIANT_FP_H_
 
-#include <inttypes.h>
+#include <stdint.h>
 #include "variant_std.h"
 #include "variants.h"
 #include "highscore.h"
@@ -20,7 +20,7 @@
 void tetris_fp(void);
 
 
-const tetris_variant_t tetrisFpVariant;
+tetris_variant_t const tetrisFpVariant;
 
 
 /*********************
diff --git a/games/tetris/variant_std.c b/games/tetris/variant_std.c
index 75cf0a9..b4a6836 100644
--- a/games/tetris/variant_std.c
+++ b/games/tetris/variant_std.c
@@ -6,7 +6,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
-#include <inttypes.h>
+#include <stdint.h>
 
 #include "../../autoconf.h"
 #include "../../random/prng.h"
@@ -51,7 +51,7 @@ void tetris(void)
  ****************************/
 
 #ifdef GAME_TETRIS
-const tetris_variant_t tetrisStdVariant =
+tetris_variant_t const tetrisStdVariant =
 {
 	&tetris_std_construct,
 	&tetris_std_destruct,
diff --git a/games/tetris/variant_std.h b/games/tetris/variant_std.h
index 3c209d8..2d11217 100644
--- a/games/tetris/variant_std.h
+++ b/games/tetris/variant_std.h
@@ -1,7 +1,7 @@
 #ifndef VARIANT_STD_H_
 #define VARIANT_STD_H_
 
-#include <inttypes.h>
+#include <stdint.h>
 #include "../../autoconf.h"
 #include "variants.h"
 #include "piece.h"
@@ -39,7 +39,7 @@ typedef struct tetris_standard_variant_t
 tetris_standard_variant_t;
 
 
-const tetris_variant_t tetrisStdVariant;
+tetris_variant_t const tetrisStdVariant;
 
 
 /****************************
diff --git a/games/tetris/variants.h b/games/tetris/variants.h
index 71d71d7..de27c11 100644
--- a/games/tetris/variants.h
+++ b/games/tetris/variants.h
@@ -1,7 +1,7 @@
 #ifndef VARIANTS_H_
 #define VARIANTS_H_
 
-#include <inttypes.h>
+#include <stdint.h>
 #include "bucket.h"
 #include "piece.h"
 #include "highscore.h"
diff --git a/games/tetris/view.c b/games/tetris/view.c
index d7b7dd8..b09ac94 100644
--- a/games/tetris/view.c
+++ b/games/tetris/view.c
@@ -2,7 +2,7 @@
 #include <string.h>
 #include <stdio.h>
 #include <assert.h>
-#include <inttypes.h>
+#include <stdint.h>
 #include "../../autoconf.h"
 #include "../../pixel.h"
 #include "../../util.h"
@@ -609,7 +609,7 @@ void tetris_view_formatHighscoreName(uint16_t nHighscoreName,
  * construction/destruction *
  ****************************/
 
-tetris_view_t *tetris_view_construct(const tetris_variant_t *const pVarMethods,
+tetris_view_t *tetris_view_construct(tetris_variant_t const *const pVarMethods,
                                      void *pVariantData,
                                      tetris_bucket_t *pBucket)
 {
diff --git a/games/tetris/view.h b/games/tetris/view.h
index a5e40c1..cee956a 100644
--- a/games/tetris/view.h
+++ b/games/tetris/view.h
@@ -1,7 +1,7 @@
 #ifndef TETRIS_VIEW_H_
 #define TETRIS_VIEW_H_
 
-#include <inttypes.h>
+#include <stdint.h>
 #include "variants.h"
 #include "piece.h"
 #include "bucket.h"
@@ -28,9 +28,9 @@ tetris_view_mode_t;
 /** data structure that drives the view module */
 typedef struct tetris_view_t
 {
-	const tetris_variant_t *pVariantMethods; /** variant function pointers */
+	tetris_variant_t const *pVariantMethods; /** variant function pointers */
 	void *pVariant;                          /** associated variant object */
-	tetris_bucket_t *pBucket;                 /** associated bucket */
+	tetris_bucket_t *pBucket;                /** associated bucket */
 	tetris_view_mode_t modeCurrent;          /** current presentation mode */
 	tetris_view_mode_t modeOld;              /** old presentation mode */
 	uint8_t nOldLevel;                       /** for detecting level changes */
@@ -57,7 +57,7 @@ tetris_view_t;
  * @param pBucket pointer to bucket which should be observed
  * @return pointer to a newly created view
  */
-tetris_view_t *tetris_view_construct(const tetris_variant_t *const pVarMethods,
+tetris_view_t *tetris_view_construct(tetris_variant_t const *const pVarMethods,
                                      void *pVariantData,
                                      tetris_bucket_t *pBucket);