I have now cleared every development issue and has come to the following understanding: In order to have non-GAPI, managed, cool and fast 3D, the minimum requirement is Windows Mobile 5(like I have, luckily). If it works on Windows Mobile 2003 then everything will be great.
The menus and design issues are now worked out: Tension and timers are available through the right-clicking(long-clicking) of objects in the game, and so is removal(with a context menu). When I'll implement 3D, the menus(level and main) might have semi-transparent backgrounds, as in the original AR.
For now, before I'm going to implement 3D, I'll upload the latest pre-beta stage screenshot of AR4PPC(which is now also full screen)(it still works in Pocket PC 2003 Second Edition)(without a video no one can see its full potential, but I might need beta testers soon
(if Peter Stock agrees to acknowledge this as a real project so I won't have copyright issues(and add his physics engine)
)(too many parentheses).