diff --git a/src/game/game.h b/src/game/game.h
index c6ecd02..0a71c52 100644
--- a/src/game/game.h
+++ b/src/game/game.h
@@ -7,7 +7,7 @@
 
 // stores the data used in the game
 #define COLUMNS ((int8_t)10)
-#define ROWS    ((int8_t)(COLUMNS * 2))
+#define ROWS    ((int8_t)24)
 
 typedef const Colour8* CRow;
 typedef Colour8* Row;
diff --git a/src/window/renderer.h b/src/window/renderer.h
index 98cbd8f..678501f 100644
--- a/src/window/renderer.h
+++ b/src/window/renderer.h
@@ -5,14 +5,14 @@
 
 #include "../game/game.h"
 
-#define SCREEN_RESOLUTION 25                                // pixels per block
-#define SCREEN_WIDTH      ((COLUMNS) * 25)                  // window width
-#define SCREEN_HEIGHT     (SCREEN_WIDTH / COLUMNS * ROWS)   // window height
-#define TET_PADDING       10                                // padding around the tetris playing field
-#define TET_WIDTH         (SCREEN_WIDTH - TET_PADDING * 2)  // tetris playing field width
-#define TET_HEIGHT        (SCREEN_HEIGHT - TET_PADDING * 2) // tetris playing field height
-#define BLOCK_WIDTH       (TET_WIDTH / COLUMNS)             // width of a block
-#define BLOCK_HEIGHT      (TET_HEIGHT / ROWS)               // height of a block
+#define PX_DENS       25                                         // pixel density; pixels per block
+#define TET_PADDING   10                                         // padding around the tetris playing field
+#define TET_WIDTH     (COLUMNS * PX_DENS - TET_PADDING)          // tetris playing field width
+#define TET_HEIGHT    (TET_WIDTH / COLUMNS * ROWS)               // tetris playing field height
+#define SCREEN_WIDTH  ((COLUMNS + 4) * PX_DENS)                  // window width
+#define SCREEN_HEIGHT ((COLUMNS + 1) * PX_DENS / COLUMNS * ROWS) // window height
+#define BLOCK_WIDTH   (TET_WIDTH / COLUMNS)                      // width of a block
+#define BLOCK_HEIGHT  (TET_HEIGHT / ROWS)                        // height of a block
 
 typedef struct {
     SDL_Window* window;