All Games by Koei - Push Square

Warriors Orochi PSP

Koei / Omega Force
- 21st Feb 2008 (JPN)
- 25th Mar 2008 (NA)
- 28th Mar 2008 (UK/EU)
Fist of the North Star: Ken's Rage 2 PS3

Tecmo Koei / Koei
- 30th Dec 2012 (JPN)
- 5th Feb 2013 (NA)
- 8th Feb 2013 (UK/EU)
Romance of the Three Kingdoms XIII PS4

Koei Tecmo / Koei
- 28th Jan 2016 (JPN)
- 5th Jul 2016 (NA)
- 8th Jul 2016 (UK/EU)
Ni-Oh PS3

Koei
Destrega PS1

SCEE / Koei
Dynasty Warriors PS1

Koei / Omega Force
G1 Jockey 4 2008 PS3

Koei
- 18th Sep 2008 (JPN)
- 26th Sep 2008 (UK/EU)
Dynasty Warriors PSP

Koei / Omega Force
- 16th Dec 2004 (JPN)
- 24th Mar 2005 (NA)
- 1st Sep 2005 (UK/EU)
Gitaroo Man Lives! PSP

Koei / iNiS
- 8th Jun 2006 (JPN)
- 29th Sep 2006 (UK/EU)
- 14th Nov 2006 (NA)
Warriors Orochi 2 PSP

Koei / Omega Force
- 27th Nov 2008 (JPN)
- 25th Aug 2009 (NA)
- 4th Sep 2009 (UK/EU)
Saiyuki: Journey West PS1

SCEA / Koei
Dynasty Warriors Vol. 2 PSP

Koei / Omega Force
- 23rd Mar 2006 (JPN)
- 24th Oct 2006 (NA)
- 17th Nov 2006 (UK/EU)
Trinity: Souls of Zill O'll PS3

Koei
- 25th Nov 2010 (JPN)
- 8th Feb 2011 (NA)
- 11th Feb 2011 (UK/EU)
Nobunaga's Ambition: Creation PS4

Tecmo Koei / Koei
- 22nd Feb 2014 (JPN)
Dynasty Warriors: Strikeforce PSP

Koei / Omega Force
- 26th Feb 2009 (JPN)
- 28th Apr 2009 (NA)
- 1st May 2009 (UK/EU)
Samurai Warriors: State of War PSP

Koei / Omega Force
- 8th Dec 2005 (JPN)
- 7th Mar 2006 (NA)
- 24th Mar 2006 (UK/EU)
Fist of the North Star: Ken's Rage PS3

Koei
- 25th Mar 2010 (JPN)
- 2nd Nov 2010 (NA)
- 5th Nov 2010 (UK/EU)
Nobunaga's Ambition: Sphere of Influence PS3

Koei Tecmo / Koei
Nobunaga's Ambition: Sphere of Influence PS4

Koei Tecmo / Koei
- 1st Sep 2015 (NA)
- 4th Sep 2015 (UK/EU)
Romance of the Three Kingdoms IV: Wall of Fire PS1

Koei
Romance of the Three Kingdoms VI: Awakening of the Dragon PS1

Koei