diff --git a/src/prelaunch/bruce.lee.a b/src/prelaunch/bruce.lee.a
index 4a1127c66..7414ecedf 100644
--- a/src/prelaunch/bruce.lee.a
+++ b/src/prelaunch/bruce.lee.a
@@ -8,13 +8,12 @@
     !source "src/prelaunch/common.a"
 
     lda #<cheat
-    sta $b3e
+    sta $b55
     lda #>cheat
-    sta $b3f
-    rts
+    sta $b56
+    jmp $900
 
 cheat
-    jsr $22a
     lda #$2c
     sta $8a7e
-    rts
+    jmp $3800
diff --git a/src/prelaunch/drol.a b/src/prelaunch/drol.a
index 8fde84652..4ce223e3d 100644
--- a/src/prelaunch/drol.a
+++ b/src/prelaunch/drol.a
@@ -12,15 +12,47 @@
     sta $bf70,y
     dey
     bpl -
+    lda #$4c
+    sta $4215
     lda #$70
-    sta $4091
+    sta $4216
     lda #$bf
-    sta $4092
-    rts
+    sta $4217
+    jmp $4000
 
-cheat_b
-    jsr $be11
+cheat_b !pseudopc $bf70 {
+    pla
+    sta jmp1+1
+    pla
+    sta jmp2+1
+    lda #>(patch-1)
+    pha
+    lda #<(patch-1)
+    pha
+    jmp ($8c00)
+
+patch
     lda #$24
-    sta $6a22
+    ldy #$70
+    ldx $bf4a
+    beq store
+    ldy #$5e
+    dex
+    beq store
+    ldy #$00
+    dex
+    bne jmp2
+
+store
+    sta $69b2,y
+
+jmp2
+    lda #$d1
+    pha
+
+jmp1
+    lda #$d1
+    pha
     rts
+}
 cheat_e
diff --git a/src/prelaunch/mr.do.a b/src/prelaunch/mr.do.a
index dace76547..1f1fe4675 100644
--- a/src/prelaunch/mr.do.a
+++ b/src/prelaunch/mr.do.a
@@ -20,17 +20,18 @@ cheat64
     rts
 
 cheat1
-    lda #<cheat2
-    sta $209
-    lda #>cheat2
-    sta $20a
+    ldy #<cheat2
+    sty $209
+    ldy #>cheat2
+    sty $20a
     bne $19e
 
 cheat3
-    lda $c083
-    bit $fffb
-    lda $c082
-    bvc cheat48
+    lda #$60
+    sta $83f
+    jsr $800
+    lda $847
+    beq cheat48
     lda #$60
     sta $d15
     jsr $ce8
@@ -45,9 +46,6 @@ cheat4
     jmp cheat64
 
 cheat48
-    lda #$60
-    sta $83f
-    jsr $800
     lda #<cheat1
     sta $1040
     lda #>cheat1
diff --git a/src/prelaunch/sneakers.a b/src/prelaunch/sneakers.a
index 1eb4bfedf..2e5941e0e 100644
--- a/src/prelaunch/sneakers.a
+++ b/src/prelaunch/sneakers.a
@@ -8,8 +8,8 @@
     !source "src/prelaunch/common.a"
 
     lda #$60
-    sta $84c6
-    jsr $3ff8
+    sta $84c8
+    jsr $3ffa
     lda #$ad
     sta $6ed8
     sta $7f1c
diff --git a/src/prelaunch/zaxxon.a b/src/prelaunch/zaxxon.a
index 8dcc655ae..48341d207 100644
--- a/src/prelaunch/zaxxon.a
+++ b/src/prelaunch/zaxxon.a
@@ -11,10 +11,10 @@
     sta $208c
     lda #>cheat
     sta $208d
-    rts
+    jmp $2000
 
 cheat
-    lda #$bd
-    sta $1a40
-    sta $1a61
+    ldy #$bd
+    sty $1a40
+    sty $1a61
     jmp $200