diff --git a/game.z80 b/game.z80
index f1917cf..a507b29 100644
--- a/game.z80
+++ b/game.z80
@@ -56,6 +56,12 @@ BDOS_READ_INPUT:              EQU 0x0A
 BDOS_OUTPUT_SINGLE_CHARACTER: EQU 0x02
 
 
+; Game over if you don't win in this many turns
+MAX_TURN_LIMIT: EQU 100
+
+
+
+
 ;********************************************************************
 ; Macros
 ;********************************************************************
@@ -170,7 +176,7 @@ game_loop:
         ; 0. Have we died?
         ld hl, TURN_COUNT
         ld a, (hl)
-        cp 50
+        cp MAX_TURN_LIMIT
         jp c,game_loop_continue
 
         ld hl, PLAYER_DEAD
@@ -1741,6 +1747,12 @@ de_delay_loop:
          POP_ALL
        djnz hl_delay
 
+       ; Double the turn-count.
+       ld hl,TURN_COUNT
+       ld a, (hl)
+       add a, a
+       ld (hl),a
+
        ld de, SLEEP_END_MSG
        call show_msg
        ret