| 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 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 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's Daydream Model 925340 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Wise Use of Time Demo Model 397790 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Wise Use of Time Model 397780 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Wizard's Lizard Model 280040 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Wolf in Autumn Model 395270 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Wonder Model 683930 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A World Abandoned Model 1512810 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A World of Little Legends Demo Model 1933260 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A World of Little Legends Model 1476680 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A World To Win Model 1587170 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A World With No Colour Model 459730 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Writer And His Daughter Model 698520 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Year of Rain Model 319540 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A YEAR of SPRINGS Demo Model 1688930 | 20?? | Steam Valve Corp. |
