diff --git a/src/prelaunch/threshold.a b/src/prelaunch/threshold.a
old mode 100644
new mode 100755
index f754d6a19..9884d99bd
--- a/src/prelaunch/threshold.a
+++ b/src/prelaunch/threshold.a
@@ -8,6 +8,8 @@
          !source "src/prelaunch/common.a"
 
          +ENABLE_ACCEL
+         +NEW_RESET_VECTOR $BFF0
+
          +GET_MACHINE_STATUS
          and   #CHEATS_ENABLED
          sta   patch+1
diff --git a/src/prelaunch/thunderbombs.a b/src/prelaunch/thunderbombs.a
new file mode 100755
index 000000000..f0412299f
--- /dev/null
+++ b/src/prelaunch/thunderbombs.a
@@ -0,0 +1,28 @@
+;license:MIT
+;(c) 2019 by qkumba
+
+!cpu 6502
+!to "build/PRELAUNCH/THUNDERBOMBS",plain
+*=$106
+
+    !source "src/prelaunch/common.a"
+
+         lda   #$60
+         sta   $887F
+         jsr   $87F9      ; load/title
+
+         +ENABLE_ACCEL
+         lda   #$60
+         sta   $7818
+         jsr   $7800      ; unpack/setup
+
+         lda   #0
+         sta   $3F2
+         +DISABLE_ACCEL
+
+         lda   $323
+         jmp   $781B
+
+!if * > $1C0 {
+  !error "code is too large, ends at ", *
+}