Garf is a memory game much like Simon. The new Garf (0.32) is skin-friendly, and it is up on the mod-my-ifone installer repository ( http://modmyifone.com/installer.xml ). It has a menu for selecting skins, and the skins can control things like button location and pitch of the tone.
A download is also available in the PDRoms archive – //files/1311/