diff --git a/res/GAMES.CONF b/res/GAMES.CONF
index d6851c422..51e19b6c2 100755
--- a/res/GAMES.CONF
+++ b/res/GAMES.CONF
@@ -188,7 +188,7 @@
 0000,MONSTER.MASH
 0001,MONTEZUMA=Montezuma's Revenge
 0001,MOON.PATROL
-0000,MR.COOL=Mr. Cool
+0001,MR.COOL=Mr. Cool
 1001,MR.DO=Mr. Do!
 1001,MR.ROBOT=Mr. Robot
 0001,MS.PACMAN=Ms. Pacman
diff --git a/src/prelaunch/mr.cool.a b/src/prelaunch/mr.cool.a
new file mode 100644
index 000000000..0151e9822
--- /dev/null
+++ b/src/prelaunch/mr.cool.a
@@ -0,0 +1,27 @@
+;license:MIT
+;(c) 2021 by 4am/xot
+
+!cpu 6502
+!to "build/PRELAUNCH/MR.COOL",plain
+*=$106
+
+        !source "src/prelaunch/common.a"
+
+        +ENABLE_ACCEL
+        lda   #$60
+        sta   $83C
+        jsr   $800       ; decompress
+
+        +GET_MACHINE_STATUS
+        and   #CHEATS_ENABLED
+        beq   +
+        lda   #$2C
+        sta   $4C47      ; patch - don't decrease lives
+        sta   $562F      ; patch - don't increase lives
+
++       +DISABLE_ACCEL
+        jmp   $4000
+
+!if * > $1C0 {
+  !error "code is too large, ends at ", *
+}