トップSteamゲーム開発者 - 文字 X
| 名称 | アプリ数 |
|---|---|
| XSGames | 30 |
| XenoAisam | 25 |
| XiNFiNiTY Games | 22 |
| 2x2 Games | 17 |
| XO GAMES | 15 |
| XDEVS LTD | 15 |
| XIAOXIAO STUDIO | 14 |
| XXIV | 12 |
| Xefier Games Inc. | 11 |
| XD | 10 |
| Xitilon | 10 |
| XCentric | 10 |
| Xaloc Studios | 10 |
| 3X Entertainment Limited | 9 |
| XDesktopSoft | 9 |
| Xoullion | 8 |
| xRed Games | 8 |
| Xeneder | 8 |
| X-Legend Entertainment Co., Ltd. | 8 |
| Xendra | 7 |