| PC/MS-Windows pack. |  Christmas Time 2019 Model 1005900 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. |  Christmas Tina Trial Version Model 1087930 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Chrysalis Model 438200 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cicadas - The Iqa Edition Model 846660 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | City Gangs San Andreas Model 1150610 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Clam Man Model 1000640 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cliché - Critical Change Model 945590 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | ClickCells - Office Lady Model 1189460 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Close Combat - The Bloody First Model 811880 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | CLS - Signal Person Model 1088830 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Code Cracker Model 813300 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Code Vein Model 678960 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Coin Pusher Model 827420 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Collector Model 1172850 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Colorgrid Model 1172520 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Coloring Game - Little City Model 1132190 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Coloring Game - Pixel Model 1173830 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Coloring Game Model 1026820 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Come Back - Chapter 1 Model 1102510 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Command - Modern Operations Model 1076160 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Conan Unconquered Model 989690 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Conqueror's Blade Model 905370 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Conscious Existence - A Journey Within Model 1093330 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Contra - Rogue Corps Model 1020540 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cooking Simulator Model 641320 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Corpse Party - Blood Drive Model 824830 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Corpse Party - Sweet Sachiko's Hysteric Birthday Bash Model 778400 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Corpse Party 2 - Dead Patient Model 940310 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Counter Terrorism - Minesweeper Model 1154560 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Crossniq+ Model 1128180 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Crossroads Inn Anniversary Edition Model 867290 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | CRSED Model 884660 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Crystar Model 981750 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cyber Furry Girl Model 1127900 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Cynoroid - Gentagelse Model 1095200 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Data mining 0 Model 1059260 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Dead Hand Model 1117480 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Demo Aussie Battler Tanks Model 1051140 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Demon Hunter 5 - Ascendance Model 1020270 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | Devil May Cry 5 Model 601150 | 2019 | Steam Valve Corp. |
