source:
http://www.igniq.com/2006/02/half-life-2-still-not-compatible-with.html
Half-Life 2 Capture The Flag
It seems my earlier piece on Xbox compatibility was remiss in its
inclusion of Half-Life 2.
David wrote in to correct me, saying "only the first 20 percent of
the game works. After that all bets are off. If you don't believe me go
to Valve tech support (they make Half-Life 2)."
Thanks David, I do believe you. I was relying on Microsoft's
compatibility list, which it seems just isn't always accurate.
Speaking of Xbox 360, Half-Life 2 will not run correctly on that
platform, despite the fact that it appears on the compatibility list
and does boot up and start playing. About a quarter of the way through
the game, on a level called Water Hazard, I started running into
inexplicable bugs, where the boat I was piloting would suddenly veer
off and dive below the water, and the entire map. Once that happens,
and it happens again and again on that level, you can't continue
playing or get your boat back where it belongs. The silly thing flies
through walls, the ground, whatever, and does so repeatedly. This
problem was particularly vexing because I had played the game for 100
minutes before finally giving up. On the original Xbox, however,
Half-Life 2 is rock solid, and I breezed through Water Hazard without
any glitches.
Paul Thurrott's Supersite for Windows