| PC/MS-Windows pack. |  A Wake Inn Model 1383690 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Walk Along the Wall Model 776360 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Walk in the Dark Model 248730 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Walk in the Woods Model 557900 | 2020 | Steam Valve Corp. |
| PC/MS-Windows pack. | A Walk in the Woods Model 842420 | 2018 | Steam Valve Corp. |
| PC/MS-Windows pack. | A Walk Through Echoes Model 1533780 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Walk With My Dog Model 1566550 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Walk With Yiayia Model 1629940 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Wanderer's Adventure Model 1127200 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. |  A War of a Madman's Making Demo Model 2013000 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A War of a Madman's Making Model 1985710 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Warmer Shade of Summer Model 1639580 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A wave of enemies Model 1655550 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Way Back Demo Model 1775040 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Way Back Model 1569170 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Way Out Model 1222700 | 2020 | Steam Valve Corp. |
| PC/MS-Windows pack. | A Way To Be Dead Model 1480030 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Way To Die Demo Model 2065130 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Way To Die Model 1409700 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A way up! Model 1036530 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Webbing Journey Demo Model 2093150 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Webbing Journey Model 2073910 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Week In The Cold Demo Model 1342950 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Week In The Cold Model 1257000 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Week in the Office - Under the Table Model 1676320 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Week of Circus Terror Demo Model 503760 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Week of Circus Terror Model 498450 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Week Model 2153880 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | A Week Model 2153890 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Weekend in Puzzleburg Demo Model 2003440 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Weekend in Puzzleburg Model 1929760 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Western Drama Demo Model 1546410 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Western Drama Model 1494230 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Whisper in the Twilight Model 2422840 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Wholesome Game About Farming Model 1892850 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Wild Catgirl Appears! Model 429580 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Winding Path Model 1382800 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Winter Story Model 1751310 | 2021 | Steam Valve Corp. |
| PC/MS-Windows pack. | A Winter's Daydream Model 925340 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Wise Use of Time Demo Model 397790 | 20?? | Steam Valve Corp. |
