One of the first game announcements at Microsoft's Tokyo Game Show Conference, Radiant Silvergun is the spiritual predecessor to Ikaruga, an arcade shoot-em-up in which color polarity defines whether players' ships stay in the air or get shot down. In both games, players can choose between one of two colors, and enemies shoot attacks which correspond to those colors. In Ikaruga, the colors were black and white; in Radiant Silvergun, it is blue and yellow.
Radiant Silvergun for XBLA will feature improved graphic fidelity and a new offline cooperative mode. Replay videos can be recorded and downloaded through Xbox Live, as well. Looks like fans finally get their wish.
The game is currently slated for a 2011 release.
Treasure is best known for developing Ikaruga, Gunstar Heroes, and Sin and Punishment. Recently, the company finished Sin and Punishment 2 for the Wii and was apparently hiring for a 3D shooter. Whether this game announcement and that job hiring coincide is unknown.