Hey, what a great looking game so far.

Well whatever language you use, you'll need a Mac to compile for the iPhone. No IFs, ANDs or BUTs. There may be work-arounds, but if you want your game working on a physical iPhone or even an iPod Touch, you need the iOS SDK obtained by signing up (for FREE) to the Apple Developer program that will install to a Mac for use with Xcode. This part is a must no matter what language you use.

If you want to use FPC, then that's no problem as FPC has scripts that integrate the compiler with Xcode allowing you to use templates that use the FPC compiler instead and do Object Pascal syntax highlighting instead of that for Objective-C.

So in short, that's your road to the iOS platform. Others have posted Pascal-made apps to the iTunes App Store quite easily. For example there is; Drawn, Hedgewars and Stoney's efforts as well.