| PC/MS-Windows pack. |  1bitHeart Model 618720 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 1Dimensional Desperado Model 668620 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. |  1f y0u're a gh0st ca11 me here! Demo Model 1654500 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 1f y0u're a gh0st ca11 me here! Model 1647740 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 1Heart Model 270190 | 2014 | Steam Valve Corp. |
| PC/MS-Windows pack. | 1M84 Model 1519920 | 2025 | Steam Valve Corp. |
| PC/MS-Windows pack. | 1nsane | 2008 | GOG sp. z o.o. |
| PC/MS-Windows pack. | 1Quest Model 332710 | 2014 | Steam Valve Corp. |
| PC/MS-Windows pack. | 1st Core - The Zombie Killing Cyborg Model 879270 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 1v1.LOL Model 2305790 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 1vs1 - Battle Royale for the throne Model 1045930 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 1Week Model 2230000 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | 1x! Space Adventure Model 1408450 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 2 Late 2 Evade Model 2068320 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2 Many Pixels Model 2230040 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2 Minutes 16 Seconds Model 2426500 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2 Ninjas 1 Cup Model 576810 | 2017 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2 of Me Demo Model 2267530 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 2 Planets Fire and Ice Model 657110 | 2017 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2 Synchro Hedgehogs Model 1716790 | 2021 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2 Times Circles Model 1250510 | 2020 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2 Tiny Cow Boys Model 2133330 | 2022 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2 Volt Demo Model 2398050 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 2 Volt Model 2388880 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2-Bit Operative Model 1901540 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | 20 Minute Metropolis - The Action City Builder Model 700200 | 2020 | Steam Valve Corp. |
| PC/MS-Windows pack. | 20 Minutes Till Dawn Demo Model 1980790 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 20 Minutes Till Dawn Model 1966900 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 20,000 Miles Under the Sea Model 1360620 | 2020 | Steam Valve Corp. |
| PC/MS-Windows pack. | 20.000 Leagues Under The Sea - Captain Nemo Model 821720 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | 200 Days Zombie Apocalypse Model 2376740 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | 200 Tolerance Model 2345230 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | 200% Mixed Juice! Model 335190 | 2015 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2002XX Model 1576140 | 2021 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2014.Aftermath Model 1032210 | 2019 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2017 VR Model 575600 | 2017 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2020 - The Ride Model 1486120 | 2021 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2021 Model 1795830 | 2021 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2022 Survival Guide Model 2196390 | 2023 | Steam Valve Corp. |
| PC/MS-Windows pack. | 2023 - Alien Bugs Invade Earth Model 2396320 | 20?? | Steam Valve Corp. |
