| William Tumeo | Developer | |
| William.C7879 | Developer | |
| WilliamH | Developer | |
| William_Williams | Developer | |
| Williams | DeveloperPublisher | |
| Williams Electronics | Publisher | |
| Williams Entertainment | DeveloperPublisher | |
| Williams Entertainment Inc. | Publisher | |
| Williams EntertainmentNA | Publisher | |
| Williams Technology | Publisher | |
| WilliamsNA | Publisher | |
| WilliamsXue | Developer | |
| WillianDn | Developer | |
| Williantonioli | Developer | |
| Willie Cheng | Developer | |
| Willie Le | Developer | |
| Willizin | Developer | |
| Willops | Developer | |
| Willow & Stork Studios | Developer | |
| Willow King | Developer | |
| Willowblade | Developer | |
| WillowishStudios | Developer | |
| Willy Elektrix | Developer | |
| Willy Willy | Developer | |
| Willysoft UK (Ian Williams) | Developer | |
| Willz | Developer | |
| Willze | Developer | |
| Wiloux | Developer | |
| Wilson F. Martins | Developer | |
| Wimpy Imp Games | Developer | |
| WinRawr | Developer | |
| Winch Gate | DeveloperPublisher | |
| Wind Chimes Games | Developer | |
| WindStrike | Developer | |
| WindThunder Studio | Developer | |
| Windaug | Developer | |
| Windfall890 | Developer | |
| Windfave | Developer | |
| Windham Classics | DeveloperPublisher | |
| Windmill | DeveloperPublisher | |
| Windmill Games | Developer | |
| Windmill Software | DeveloperPublisher | |
| Windoge10 | Developer | |
| Winds | Developer | |
| Winds Co. | Developer | |
| Winds Co., Ltd. | Developer | |
| Windward Studios | Developer | |
| WindyTown | Developer | |
| Windybeard | Developer | |
| Windysoft | Developer | |