MagicSeb released Rick360, an SDL port/compile of xrick (which is an open-source clone of Rick Dangerous) for homebrew 360s:
I changed almost nothing to the original code (just added "game:\" in the file xrick.c and activated the joystick).
The game is playable, but a bit slow when there are many sprites on screen.
Official Site: n/a, by MagicSeb (xrick, Rick Dangerous)
News-Source: gueux-forum.net