| Yacht Club Games | United States | 2011 | 3 | 3 |
| Yanoman | Japan | December 1959 | — | 1 |
| Yellow Dot | Poland | — | 2 | 2 |
| Yeti | Japan | 2005 | 1 | 2 |
| Yingpei Games | People's Republic of China | September 2006 | 1 | — |
| YipYip | Netherlands | — | 3 | — |
| Yogscast Games | United Kingdom | — | — | 4 |
| Yongshi | People's Republic of China | — | 1 | 1 |
| Yoozoo Games | People's Republic of China | 2009 | 1 | 2 |
| Yostar | People's Republic of China | August 14, 2014 | — | 4 |
| Young Genius | Sweden | — | — | 11 |
| YoYo Games | United Kingdom | 2007 | — | — |
| Ysbryd Games | Wales | 2014 | — | 2 |
| Yuke's | Japan | 1993 | 27 | — |
| Yume Creations | Germany | — | 2 | 2 |
| YumeHaven | Japan | — | — | 1 |
| Yustas Games Studio | Russia | 2011 | 27 | — |
| Yuzusoft | Japan | 2006 | 4 | 3 |