diff --git a/res/GAMES.CONF b/res/GAMES.CONF
index c04d7e2cf..5711dd532 100755
--- a/res/GAMES.CONF
+++ b/res/GAMES.CONF
@@ -105,6 +105,7 @@
 1000,IMPOSSIBLE.MISS=Impossible Mission
 0110,INDIANA.JONES
 1000,INTL.GRAN.PRIX=International Gran Prix
+0000,I.O.SILVER=I.O. Silver
 0001,JOUST
 0000,JUGGLER
 0001,JUMPMAN
diff --git a/res/TITLE.HGR/I.O.SILVER b/res/TITLE.HGR/I.O.SILVER
new file mode 100644
index 000000000..82c478530
Binary files /dev/null and b/res/TITLE.HGR/I.O.SILVER differ
diff --git a/res/TITLE.HGR/_FileInformation.txt b/res/TITLE.HGR/_FileInformation.txt
index d73c4c302..4b8982e28 100644
--- a/res/TITLE.HGR/_FileInformation.txt
+++ b/res/TITLE.HGR/_FileInformation.txt
@@ -93,6 +93,7 @@ HIGH.RISE=Type(06),AuxType(4000),Access(C3)
 HORIZON.V=Type(06),AuxType(4000),Access(C3)
 HUNGRYBOY=Type(06),AuxType(4000),Access(C3)
 HYPER.HEAD.ON=Type(06),AuxType(4000),Access(C3)
+I.O.SILVER=Type(06),AuxType(4000),Access(C3)
 IKARI.WARRIORS=Type(06),AuxType(4000),Access(C3)
 IMPOSSIBLE.MISS=Type(06),AuxType(4000),Access(C3)
 INTL.GRAN.PRIX=Type(06),AuxType(4000),Access(C3)
diff --git a/res/dsk/i.o. silver PRODOS (san inc pack).po b/res/dsk/i.o. silver PRODOS (san inc pack).po
new file mode 100644
index 000000000..4a63e66f7
Binary files /dev/null and b/res/dsk/i.o. silver PRODOS (san inc pack).po differ
diff --git a/res/notes/wishlist.txt b/res/notes/wishlist.txt
index 4785f5fa3..e7fa54101 100644
--- a/res/notes/wishlist.txt
+++ b/res/notes/wishlist.txt
@@ -63,7 +63,6 @@ Mating Zone [priority]
 
 //other
 Battle Chess [DHGR]
-IO Silver [priority]
 Castle Smurfenstein
 Dino Smurf
 
diff --git a/src/prelaunch/i.o.silver.a b/src/prelaunch/i.o.silver.a
new file mode 100644
index 000000000..fabc109cc
--- /dev/null
+++ b/src/prelaunch/i.o.silver.a
@@ -0,0 +1,22 @@
+;license:MIT
+;(c) 2020 by qkumba
+
+!cpu 6502
+!to "build/PRELAUNCH/I.O.SILVER",plain
+*=$106
+
+    !source "src/prelaunch/common.a"
+
+         +ENABLE_ACCEL
+         lda   #$60
+         sta   $8BA
+         jsr   $800       ; decompress
+         lda   #$60
+         sta   $B440
+         jsr   $B436
+         +DISABLE_ACCEL
+         jmp   $800
+
+!if * > $1C0 {
+  !error "code is too large, ends at ", *
+}