diff --git a/game.exe b/game.exe
index 108de1e..52629cd 100755
Binary files a/game.exe and b/game.exe differ
diff --git a/game.prj b/game.prj
index 780f942..add6b58 100755
Binary files a/game.prj and b/game.prj differ
diff --git a/jiles.jor b/jiles.jor
index 8217dcf..bd5f944 100755
--- a/jiles.jor
+++ b/jiles.jor
@@ -14,16 +14,26 @@ REPL start-repl
 intern input.jor
 input.jor loadfile
 
-: worldpos>tilepos 4 >> swap 4 >> swap ;
-: tilepos>mapindex mapsize drop * + ;
+var color
+var spriteindex
+
+8 spriteindex !
+2 color !
+
+
+: refresh
+  spriteindex @ drawfatsprite ;
+
+: mousepos>sprpos 3 >> swap 3 >> swap ;
+
 : tick
   MOUSEL clicked if
-    0xf5 mousepos worldpos>tilepos tilepos>mapindex map + b!
+    color @ mousepos mousepos>sprpos spriteindex @ putpixel
   then
   tick-debounce
   ;
 
-: draw
-  0 0 scroll
-  mousepos 4 draw-sprite
-  draw-screen ;
\ No newline at end of file
+: draw ;
+
+mouseshow
+refresh
diff --git a/testbed.c b/testbed.c
index 2ca8a76..4d745d0 100755
--- a/testbed.c
+++ b/testbed.c
@@ -263,6 +263,66 @@ void f_glitch() {
   }
 }
 
+/* JILES */
+#define SCREEN_STRIDE 320
+void f_mouseshow() {
+  setLogicalWidth(SCREEN_STRIDE >> 1);
+  mouse_show();
+}
+
+void f_drawfatsprite() {
+  int isprite = TOP().i;
+  unsigned int dst = 0;
+  unsigned int far *spr = &sprites[isprite * SPRITE_STRIDE];
+  int x, y, faty;
+
+  DROP(1);
+  setWriteMode(0);
+  for ( y = 0; y < 16; y ++ ) {
+    for ( x = 0; x < 16; x ++ ) {
+      int shift = (15 - x);
+      int b = (spr[y +  0] & (1 << shift)) >> shift;
+      int g = (spr[y + 16] & (1 << shift)) >> shift;
+      int r = (spr[y + 32] & (1 << shift)) >> shift;
+      int i = (spr[y + 48] & (1 << shift)) >> shift;
+      int colour = b | (g << 1) | (r << 2) | (i << 3);
+      int fill1 = (spr[y + 64] & (1 << shift)) ? 0xff : 0x55;
+      int fill2 = fill1 == 0xff ? 0xff : 0xaa;
+      setPlaneColor(colour);
+      for ( faty = 0; faty < 8; faty ++) {
+	VID[dst + x + (SCREEN_STRIDE * faty)] = (faty % 2) ? fill1 : fill2;
+      }
+    }
+    dst += (SCREEN_STRIDE * 8);
+  }
+}
+
+void f_putpixel() {
+  int isprite = TOP().i;
+  unsigned int far *spr = &sprites[isprite * SPRITE_STRIDE];
+  int x = ST2().i;
+  int y = ST1().i;
+  int color, shift, b, g, r, i, v;
+
+  DROP(3);
+  color = TOP().i;
+  DROP(1);
+
+  shift = (15 - x);
+  b = (color & 0x01);
+  g = (color & 0x02) >> 1;
+  r = (color & 0x04) >> 2;
+  i = (color & 0x08) >> 3;
+  v = ((color & 0x10) >> 4) ^ 1;
+
+  spr[y +  0] = (spr[y +  0] & ~(1 << shift)) | (b << shift);
+  spr[y + 16] = (spr[y + 16] & ~(1 << shift)) | (g << shift);
+  spr[y + 32] = (spr[y + 32] & ~(1 << shift)) | (r << shift);
+  spr[y + 48] = (spr[y + 48] & ~(1 << shift)) | (i << shift);
+  spr[y + 64] = (spr[y + 64] & ~(1 << shift)) | (v << shift);
+}
+
+/* INIT */
 void game_f_init(char *exe, char *bootjor) {
   f_init(exe);
   CDEF("seremit", f_seremit);
@@ -288,6 +348,10 @@ void game_f_init(char *exe, char *bootjor) {
   CDEF("glitch", f_glitch);
   CDEF("unfuck", tile_init);
 
+  CDEF("mouseshow", f_mouseshow);
+  CDEF("drawfatsprite", f_drawfatsprite);
+  CDEF("putpixel", f_putpixel);
+
   f_loadjor(bootjor);
 
   f_atexit = f_lookupcp("atexit");