Many years have passed since the world war inflicted catastrophic damage on the human race, leaving only a few survivors. In their new community “Cocoon,” life has been threatened by a black material called Erosion, creating a post-apocalyptic environment. Surviving humans recruit a militia to conquer the Erosion and set out to take down the evil, “Living Tower”. Arriving at the scene is the stalwart warrior Syd, whose only intentions are to destroy the Tower. He meets the beautiful and mysterious Filena as they both ascend to the top in their search for answers. The erosion of the Tower intensifies as the players climb up through the moving landform.


Players take on the role of the massive, gun-wielding warrior Syd and will battle through intense action sequences in an unpredictable, shape-shifting battlefield, aided by the mysterious acrobatic Filena. In addition to single player campaign, QUANTUM THEORY also supports four modes of online multiplayer, complete with voice chat for real-time communication.


Shape-Shifting Battlefield: Navigate through a dark fantasy world where the intense battleground surprises you with new and challenging obstacles by changing its form in real-time
Two-Character Combination Actions: Syd and Filena, an AI-controlled partner, perform actions as a pair—in some instances, that is the only way to overcome hurdles. Strategically perform combos for a more powerful, fierce attack against colossal enemies
Online Play: Continue your adventure with others in four online modes
Distinctive Art Nouveau Style Environment: Radiant colors and the mixture of organic elements complements both action and technology

Official URL

JasonKaotic and 3 others own Quantum Theory
nasty nappa played Quantum Theory
Oct 11, 10 9:32am

Developer: Team Tachyon
Publisher: Tecmo

Hey, it looks like Sony finally got some rights...

Sep 28, 10 10:36pm
added a cheat

[image2 width=650 height=200] The 2010 Tokyo Game Show is set to start in a couple of weeks, as publishers... posted Sep 01, 10 11:20pm

Sep 01, 10 1:40am
Aug 03, 10 10:41pm
added 22 new screenshots

[image1 link=yes width=650 height=366] People who think shooters are a Western thing have obviously never met... posted Jun 25, 10 12:28am

May 10, 10 5:10am
added 8 new concept art

Quantum Theory stepped back into the spotlight not too long ago when Tecmo announced the former PlayStation 3... posted Jan 15, 10 6:14pm

2010 is a big year for the PlayStation 3: not only is Sony supposed to be launching its own motion controller,... posted Dec 07, 09 5:25pm

Miss Razz
Mar 14, 09 4:43am
added 13 new screenshots
Miss Razz
Jul 31, 07 1:34pm
Buy Now $  Compare Prices
0 want | 4 own
2.4 / 10
View all 36 screenshots