I pretty much consider myself a cross platform developer. It is more or less fairly easy to do that with BlitzMax so long as you can find somewhere to compile to the different platforms - your relatives may come in handy ;-) ... I think there are a few areas when you have little choice but to use platform-specific code for each platform in order for things to work the same on each, which defeats the cross-platform-ability, but it's not too much price to pay considering most of it works as is. I haven't released anything yet but intend to release on all 3/4 platforms.