| PC/MS-Windows pack. |  Chinese Characters Model 2185470 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Choice of Life - Middle Ages 2 Model 1573630 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chords Enchanter Model 1977360 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Christmas Wonderland 13 - Collector's Edition Model 2253880 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chromatic Model 1983650 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chronicles of Cyberpunk - Deep Sleep Model 1433000 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chronicles of Tal'dun - The Remainder Model 1616280 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chrysalis Inc. Model 1919320 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Circo - Dark Story Model 1804290 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Citizens - Far Lands Model 1646120 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | City Bus Manager Model 1364210 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | City Legends - Trapped In Mirror Collector's Edition Model 2101330 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | City Limits Model 2056550 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | City of Heroes - Going Rogue Model 29680 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Clad in Iron - Chincha Islands 1866 Model 2196170 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Claire's Cruisin' Cafe - High Seas Cuisine Model 1849440 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Classic Memory Game Model 2056480 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Classified Stories - Color Out of Space Model 1810130 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cleaning The System Model 1888100 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cleopatra Fortune S-Tribute Model 1913690 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Click Quest 3D 2-Plus Model 1866310 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Climb Challenge - Castle Model 2108420 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Clutter 12 - It's About Time - Collector's Edition Model 1776600 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Clutter's Greatest Hits - Collector's Edition Model 2153050 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Coal Mining Simulator - Prologue Model 1804650 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Code:Valkyrie II Model 1810350 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Codename Prodigy Model 1608310 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Coffee Break - A Sip Away From Doom Model 2095010 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cogen - Sword of Rewind / Cogen Model 1514380 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Coin Pusher Casino Model 2178590 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Coins Collector Simulator Model 1868280 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Coins Collector Sport Car Model 2101630 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Coins, Chests and Loot Model 1892670 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. |  Collateral Damage (Katana Jam II Version) Model 2234070 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Collect Objects Model 1873880 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | College Bound - Arctic Adventure Model 1895370 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | College Kings 2 - Episode 1 Model 1924480 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | College Seduction Model 1839570 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Colonize Prologue Model 1736450 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | Color Patterns Model 1857730 | 2022 | Steam Valve Corp. |
