| title | developer | year | platform | | pop. |
|---|
| I Have No Mouth and I Must Scream | Night Dive Studios | 2013 | Linux | adventure Horror | | | label | |
| Icewind Dale: Enhanced Edition | Overhaul Games | 2014 | Linux | adventure role-play Fantasy | | | label | |
| Iconoclasts | Joakim Sandberg | 2018 | Linux | action/reflex adventure | | | label | |
| Iconoclasts | author | 2018 | Windows | action/reflex adventure | image | | label | |
| Iconoclasts | author | 2018 | Mac OS X | action/reflex adventure | | | label | |
| Ignition | Unique Development Studios | 2015 | Linux | | | | label | |
| Imperium Galactica II: Alliances | Digital Reality;Gyroscope Games | 2017 | Linux | strategy Science Fiction | | | label | |
| Incredipede | Northway Games | 2012 | Linux | platformer puzzle Cartoon | | | label | |
| Indiana Jones and the Fate of Atlantis | LucasArts | 2015 | Linux | adventure | | | label | |
| Indiana Jones and the Last Crusade: The Graphic Adventure | Lucasfilm Games | 1989 | MS-DOS | adventure | image | subject | label | |
| Infinifactory | Zachtronics Industries | 2015 | Linux | puzzle | | | label | |
| Infinifactory | Zachtronics Industries | 2015 | Windows | puzzle | | | label | |
| Infinium Strike | Codex Worlds | 2016 | Linux | | | | label | |
| Inherit the Earth: Quest for the Orb | New World Computing | 2004 | Linux | adventure | image | | label | |
| Inherit the Earth: Quest for the Orb | The Dreamers Guild | 1994 | MS-DOS | adventure Fantasy | image | subject | label | |
| Inner Chains | Telepaths Tree | 2017 | Windows | shooter adventure Fantasy | | | label | |
| Inquisitor | Wooden Dragon | 2006 | Windows | role-play Fantasy | image | | label | |
| INSIDE | Playdead | 2016 | Windows | action/reflex platformer puzzle Science Fiction | image | subject | label | |
| INSIDE | Playdead | 2018 | Switch | action/reflex platformer puzzle Science Fiction | image | subject | label | |
| Interstate '76 | Activision | 1997 | Windows | shooter racing/driving | image | | label | |
| Interstate '76 Nitro Pack | Activision | 1998 | Windows | shooter racing/driving | image | | label | |
| Interstellaria | Coldrice Games | 2015 | Linux | simulation role-play Science Fiction | | | label | |
| Interstellaria | Coldrice Games | 2015 | Windows | simulation role-play Science Fiction | image | subject | label | |
| Interstellaria | Coldrice Games | 2015 | Mac OS X | simulation role-play Science Fiction | | | label | |
| Into the Stars | Fugitive Games | 2016 | Windows | strategy Science Fiction | | | label | |
| Invictus: In the Shadow of Olympus | Quicksilver Software | 2000 | Windows | action/reflex role-play Fantasy | image | | label | |
| Invisible Inc: Contingency Plan | Klei Entertainment | 2015 | Linux | strategy turn-based | | | label | |
| Invisible, Inc. | Klei Entertainment | 2015 | Linux | strategy turn-based | | | label | |
| Invisible, Inc.: Contingency Plan | Klei Entertainment | 2015 | Linux | strategy turn-based | | | label | |
| Ion Fury | Voidpoint | 2019 | Linux | shooter Science Fiction | | | label | |
| Ion Fury | Voidpoint | 2019 | Windows | shooter Science Fiction | | | label | |
| Ironclad | DotEmu | 2016 | Linux | shooter | | | label | |
| Ironclad Tactics | Zachtronics Industries | 2013 | Linux | strategy turn-based Historical | | | label | |
| Ittle Dew | Ludosity | 2013 | Linux | adventure | | | label | |
