Strategy

Developer(s): Q-Games Publisher(s): SCEA Platform(s): PlayStation 3, PlayStation Portable Release date(s): January 24, 2008 Genre(s): Tower defense Mode(s): Single-player; Two player co-op (local)

Developer(s): Valve Corporation Publisher(s): Valve Corporation Platform(s): Microsoft Windows, Mac OS X, Xbox 360, PlayStation 3 Release date(s): April 19, 2011 Genre(s): Puzzle-platform game, Science fiction Mode(s): Single-player, cooperative

Developer(s): Housemarque Publisher(s): Sony Computer Entertainment Platform(s): PlayStation 3, PlayStation Portable Release date(s): June 28, 2007 Genre(s): Shoot ‘em up Mode(s): Single-player, co-operative multiplayer

Developer(s): Sony Computer Entertainment Japan Publisher(s): Sony Computer Entertainment Japan Platform(s): PlayStation 3 Release date(s): August 28, 2008 Genre(s): Maze Mode(s): Single-player

Publisher(s): Sony Computer Entertainment Platform(s): PlayStation 3 Release date(s): June 4, 2009 Genre(s): Puzzle Mode(s): Single player, Two player