Kenta Cho's games are pretty awesome. Abstract bullet hell.

http://www.asahi-net.or.jp/~cs8k-cyu/index_e.html

Narcissu is an awesome freeware VN.

http://narcissu.insani.org/

Urban Terror is a Q3A realism mod and standalone game with Action Quake-style (faster, more action-oriented) play as opposed to CS-style play (slower, more tactical). Bid for Power (English Bid for Power is the "expanded" stand alone version of the original mod), which is pretty much DBZ as a third person shooter.

http://urbanterror.net
http://bfpfinal.quakeunity.com/