Though not as high profile or as long-delayed as Castle Crashers, there are still plenty of titles for XBLA that will be seeing released in the summer. The same Microsoft press release that held the Castle Crashers release info also had other XBLA titles on the summer release list. These games were as follows:
Braid, a platformer, Defense Grid: The Awakening, a tower-defense game, Go! Go! Break Steady!, a music rythm game, and finally there's Penny Arcade Adventures: On the Rain-Slick Precipice of Darkness, Penny-Arcade's RPG adventure game. Whew. With so much good content seeing release this summer (Ninja Gaiden II) here's hoping we'll be able to find time to play these games, as some (if not all) of these hold real promise.
The descriptions from the press release after the break.