I've released an old commercial game i made designed for BlackBerry with 320x240 screens. just visit m.jonathanhfisher.co.uk from your blackberry browser for an ota download. it's not perfect, there are some glitches, but it's good fun.
ENJOY!
(just to be clear - i own the copyright on this and am releasing it for free, i'm not uploading dodgy pirate games)