Game Revolution
- Review by Ben Silverman, C+. "The core of the game is intact and it's still got some genuinely fun moments, this is a much better game to rent than to own."
- http://www.gamerevolution.com/oldsite/games/ps2/action/giants_citizen_kabuto.htm

GamePro.com
- Review by Pong Sifu, [4/5]. "The humor and action alone make Giants worth checking out if you’ve never played the PC version."
- http://www.gamepro.com/sony/ps2/games/reviews/17781.shtml

IGN
- Review by Doug Perry, [8/10]. "If you want a good action game for the PS2, Giants won't let you down."
- http://ps2.ign.com/articles/165/165945p1.html

Planet PS2
- Review by David S J Hodgson, [84/100]. "Utterly clever, entertaining, and action-packed."
- http://www.planetps2.com/features/reviews/2001/giantscitizenkabuto/

GameZone
- Review by Immortal, [9.2/10]. "A game worth looking into no matter what genre you like."
- http://ps2.gamezone.com/gzreviews/r11632.htm