| PC/MS-Windows pack. |  Cave Crawler Model 2282480 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Celebrity Slot Machine Model 2183710 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Celestiais & Dragões Model 1787740 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cell Machine Indev Model 2435630 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | CGI - The Game Model 2251930 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chameleon Gems Model 39300 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Champions of Midgard Model 945570 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Changeling Charade Model 2235670 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Changeling Tale Model 1232870 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Charades Movie One Model 1832370 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Charged - RC Racing - Starter Edition Model 2393660 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chef Life - A Restaurant Simulator Model 1122340 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chernobyl - Death May Die Model 2151860 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chess Dungeons - Shubousha Model 2118010 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chickenoidz Super Party Model 1989770 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chief Emoji Officer Model 2287350 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chieftain's Daughter Model 2244560 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chimeras - Blinding Love Collector's Edition Model 2282310 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chinese Chess Party (Xiangqi) Model 2336550 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chinese Frontiers - Prologue Model 2317910 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chroma + Elektron Model 1020550 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cities - Skylines II Model 949230 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cities of the World Jigsaw Puzzles Model 2369100 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cities Restored Model 2075260 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cities Virtual Reality Model 1956260 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Citizens - Far Lands - Prologue Model 2182110 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Citizens - On Mars - Prologue Model 2422390 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Citizens - On Mars Model 2310630 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | City Legends - The Ghost of Misty Hill Collector's Edition Model 2432030 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | City Z Model 2245750 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Clarent Saga - Chronicles Model 1848330 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Claris The Princess Knight - Extra Story Model 2252180 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Clash - Artifacts of Chaos Model 1430680 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Clash - Robot Detective - Complete Edition Model 2222480 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Class of '09 - The Re-Up Model 2318310 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Clear Mosaic Model 2417790 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Click & Cum Model 2298610 18 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Clientele - Sexy Deckbuilder Model 2104270 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cockroach Simulator - House of Survive Model 2268800 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | Code - Pandora Model 1850520 | 2023 | Steam Valve Corp. |
