Qruton for the PSP is a puzzle game, but it is only a Japanese game at this time. It's fun to play, even though on gameplay I have no clue on the more details about this game since I do not understand much of Japanese. Nevertheless, I do believe Qruton has great potential if ever made it to English. There is a little similarity playing this game and Ultimate Block Party, although not a big one. I could see this might just be more addicting than what it seems.