Skeezix released a new version of Castaway a short time ago. Changes are:

NEW:Per-scanline-palette management; or in reality, went to 16bpp render mode, to make life much easier.CHG:Render the virtual keyboard less often; shouldn’t hit performance anymore to have it showingFIX:Can drop from frameskip 90 to 0 in one hit now; (used to work only with 91+)

Visit his siteherefor more information and the downloads.