| PC/MS-Windows pack. |  A Million Conquests Model 1129210 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Million Hits Model 940050 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Million Lightyears Beyond Model 1833870 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Millionaire's Story Model 2249800 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Mining Game Model 659500 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Mirror Puzzle Model 1655420 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Modest Legacy Model 1858090 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. |  A Monster's Expedition Demo Model 1326610 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Mortician's Tale Model 578720 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Most Extraordinary Gnome Model 2089710 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Mountain of One Model 2230720 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Moustache in the House 2 Model 1877820 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Moustache in the House Model 1203770 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Murmur in the Trees Model 1475260 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Museum of Self & Space Demo Model 1566170 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Museum of Self & Space Model 1557400 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Musical Story Demo Model 1546110 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Musical Story Model 1546100 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Mysterious Gallery Model 1225040 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Nasty Farm Model 1544820 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Near Dawn Model 728170 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Near Dawn ~ Prologue Demo Model 728430 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Nerd who has sex with girls in Another world has become a HERO Demo Model 1584030 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A New Beginning - Final Cut Model 105000 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A New Home Model 1517030 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A New Leaf - Memories Model 1586340 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A New World - Kingdoms Model 628650 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Night at the Races Model 1082000 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Night Before the Deadline Model 1578540 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Night In Berlin Model 1338420 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Night In Kyosaka Demo Model 1273360 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Night In Kyosaka Model 1273350 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Night In Omar's Burger Model 2209930 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Night in Vanet Manor Model 1621220 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Night With Gigsjaw VR Model 1900650 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Night With Maru Model 2406080 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Night With Neil Model 2363010 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Nightmare's Trip Model 1156630 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Ninja in Training Model 1418190 | 20?? | Steam Valve Corp. |
| PC/MS-Windows pack. | A Noite Sem Fim Model 1824160 | 20?? | Steam Valve Corp. |
