| 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 | |
| Windzyboy | Developer | |
| Wing | Publisher | |
| Wing13 | Developer | |
| Wingbeat Studios | Developer | |
| Winged | Developer | |
| Winged Cloud | Developer | |
| WingedPixel | Developer | |
| WingedRobot | Developer | |
| Wingless Little People | Developer | |
| WinglessPegasus | Developer | |
| Wings Of Bluestar | Developer | |
| Wings Simulations | Developer | |
| Winking | Publisher | |
| Winking Entertainment | Developer | |
| Winky Soft | DeveloperPublisher | |
| WinkySoft | Developer | |
| Winkysoft | DeveloperPublisher | |
| Winlight | DeveloperPublisher | |
| Winnie Song | Developer | |
| Winnitude! | Developer | |
| Winston Douglas Wood | Developer | |
| Wintechno | Publisher | |
| Winter Dev Team | Developer | |
| Winter Mushroom Games | Developer | |
| Winter Wolf Game Studio | Developer | |
| Winter Wolves | Developer | |
| WinterCell Studios | Developer | |
| WinterWolves Games | Developer | |
| Winteractive | Developer | |
| Winterdust | Developer | |
| Wintermits | Developer | |
| Winterpath | Developer | |
| Wintervalley Software | Developer | |
| Wire Productions | Publisher | |
| Wired Productions | DeveloperPublisher | |
| WiredInRogue | Developer | |
| Wiritos | Developer | |
| Wirudev | Developer | |
| Wisch | Developer | |
| Wisco Computing | Publisher | |
| Wisdom Tree | DeveloperPublisher | |
| Wisdom Tree Inc. | DeveloperPublisher | |
| Wisdom Tree, Inc. | Developer | |
| Wise Hedgehog | Developer | |
| Wise Owl Software (Mark Incley, The Team, Arthur Mudd, Shaun McClure, Ben Daglish) | Developer | |
| Wisedawn | Developer | |
| Wish Fang | Developer | |
| Wish Studios | Developer | |
| Wishbone | DeveloperPublisher | |
| Wishforge | Developer | |