| PC/MS-Windows pack. |  A Cat's Manor Model 667430 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. |  A Catchy Game - IntraTag Demo Model 2277030 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Catchy Game - IntraTag Model 2084190 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Chair in a Room - Greenwater Model 427760 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Challenge Model 613920 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Chamber of Stars Demo Model 1626330 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Chamber of Stars Model 1624190 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Cheesy Game Model 976970 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Christmas Fireplace Model 767120 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Christmas Peril Model 996650 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Christmas Story From Hell VR Model 1817320 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Christmas Yarn Model 2219160 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Circle Among Squares Model 1635220 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A City Sleeps Model 316180 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Clever Label Model 1627660 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Collection of Bad Moments Model 717120 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Comfortable Burden Model 1432760 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Contusion Demo Model 1987180 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Contusion Model 1805680 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Corgi's Cozy Hike Model 2321250 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Country of One Model 598720 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Couple of Cubes Demo Model 1582150 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Couple of Cubes Model 1582120 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Crazy Guy Model 2414240 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Crooked Heart Model 1193490 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Crown of Sorcery and Steel Demo Model 1898800 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Crown of Sorcery and Steel Model 1898790 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Crown of Thorns Model 2001830 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Cure for Jessica Model 1689520 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Dance of Fire and Ice Model 977950 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Dark Ice Saga - The Rescue Model 1386360 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Dark World - The Glowing City Model 1182690 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Date in the Park Model 468530 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Day For A Kitten Model 742230 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Day In Space Model 1698400 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Day in the Life of Maria Model 1095880 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Day in the Park Model 1730670 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Day in the Woods Model 526890 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Day of Maintenance Demo Model 1712380 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Day of Maintenance Model 1712370 | 20?? | Steam Valve Corp. |
