> It's not exactly a novel idea.
True. But:
1) It isn't exactly trivial.
2) Someone who didn't play games in the 1990s, and doesn't like RTS games may very well actually have never played a game with demo recording and playback.
3) Hell, I was unaware that either Source or recent versions of Unreal Engine were capable of demo recording, and I've played the shit out of lots of games that use both engines.
