I started by editing games to get locked levels, then I made them for fun, then I remixed projects to make improvements for myself, and now I make projects for the challenge, with a bit of remixing.

In order of priority:
Windows XP 2 (very early)
Physics Engine (major bug fixing + features)
NES Tetris B-Type (I have no idea)
Power Plant Sim 2 (adding sprites)
Destroy the Computer 2 (not started)