| W!Games |
| Wahoo Studios |
| Wales Interactive |
| Wanadoo Edition |
| Wanako Games |
| Warashi, Inc. |
| Wargaming.net |
| Warner Bros. Games Montreal |
| Warner Bros. Interactive |
| Warthog |
| WaterMelon |
| WayForward |
| Webfoot Technologies |
| Webzen |
| Westwood Studios |
| WGT.com |
| Whiptail Interactive |
| White Birds Productions |
| Wicked Studios |
| Wide Games |
| Wideload Games |
| WildTangent |
| Wings Simulations |
| WizardWorks |
| Wolverine Studios |
| Word of Mouse Games |
| World Forge |
| WOW Entertainment |
| WXP |
| WXP Games |
| Xicat Interactive |
| Xilam |
| Xpec Entertainment Inc. |
| XS Games |
| XSEED Games |
| XYLA Entertainment |
| Yager Development |
| Young Horses, Inc. |
| Yuke's Media Creations |
| Z-Axis |
| Zeal Game Studios |
| ZEN Studios |
| ZeniMax Online Studios |
| Zero Sum Games |
| Zipper Interactive |
| Zoe Mode |
| Zoetrope Interactive |
| Zoink! Games |
| Zojoi |
| Zombie Studios |
| Zono |
| Zoo Digital |
| Zoonami |
| zSlide |
| ][ Games |
