| Company | Based in | Founded | Industry |
|---|---|---|---|
| Xaloc Studios | Palma | 2015 | video game industry |
| XD | Shanghai | 2010 | video game industry |
| Xeen | Yodogawa-ku | July 3, 2006 | video game industry |
| Xform Games | Utrecht | June 28, 2004 | video game industry |
| XGen Studios | Edmonton | 2001 | video game industry |
| Xicat Interactive | London | 2000 | — |
| Xigma Games | Bengaluru | — | video game industry |
| Hamburg, Barcelona | 2003 | — | |
| Xitilon | — | — | video game industry |
| XPEC Entertainment | Taipei | August 2000 | video game industry |
| XS Games | New York City | 2002 | video game industry |
| Xtalsoft | Japan | 1982 | video game industry |