| Immortal Hunters (2024) | 215,776 | 194 |
| Immortal Legacy: The Jade Cipher (2019) | 3,074,536 | 653 |
| Immortal Life (2022) | 1,010,337 | 1,815 |
| Immortal Love: Bitter Awakening (2019) | 112,596 | 109 |
| Immortal Love: Black Lotus (2018) | 68,981 | 95 |
| Immortal Love: Blind Desire (2017) | 47,246 | 85 |
| Immortal Love: Kiss of the Night (2018) | 93,024 | 93 |
| Immortal Love: Letter from the Past (2015) | 98,583 | 123 |
| Immortal Love: Polar Lights (2023) | 851,135 | 173 |
| Immortal Love: Sparkle of Talent (2021) | 41,631 | 99 |
| Immortal Love: Stone Beauty (2020) | 74,865 | 113 |
| Immortal Love: The Price of a Miracle (2016) | 34,897 | 91 |
| Immortal Love: True Treasure (2022) | 58,797 | 107 |
| The Immortal Mayor (2021) | 801,549 | 270 |
| Immortal Planet (2017) | 404,851 | 343 |
| Immortal Realms: Vampire Wars (2019) | 2,659,291 | 1,054 |
| Immortal Redneck (2017) | 6,848,302 | 1,887 |
| Immortal Soul: Black Survival (2019) | 3,049,469 | 1,974 |
| Immortal Tactics: War of the Eternals (2022) | 257,124 | 37 |
| Immortal: Unchained (2018) | 8,606,368 | 4,176 |
| Immortality (2022) | 86,412,192 | 6,800 |
| Immortals Fenyx Rising (2020) | 166,998,643 | 102,115 |
| Immortals of Aveum (2023) | 19,760,767 | 19,317 |
| The Immortals of Terra: A Perry Rhodan Adventure (2008) | 150,558 | 132 |
| Immune Attack (2008) | 258 | 3 |
| IMMURE (2019) | 1,367,283 | 239 |
| Imo and the King (1995) | 41,536 | 19 |
| iMobsters (2009) | 4,692 | 4 |
| Imogen (1986) | 4,020,968 | 196 |
| Imp of the Sun (2022) | 769,955 | 528 |
| Impact Point (2022) | 20,351 | 67 |
| Impact Winter (2017) | 2,766,286 | 970 |
| Impaler (2022) | 445,780 | 289 |
| Impasto (2022) | 197,802 | 154 |
| Imperator: Rome (2019) | 64,987,510 | 21,093 |
| Imperatum (2018) | 21,306 | 24 |
| Imperia Online (2005) | 748,612 | 373 |
| Imperial Ambitions (2025) | 21,743 | 20 |
| Imperial Arms: Curse of the Conqueror (2022) | 109 | 2 |
| Imperial Glory (2005) | 785,900 | 532 |
| Imperial Grace (2025) | 190 | 8 |
| Imperial SaGa (2015) | 3,846,916 | 1,755 |
| Imperial SaGa Eclipse (2019) | 64,563 | 190 |
| Imperial Settlers: Imperial Miners (2024) | 0 | 1 |
| Imperial Storm (2024) | 5,956 | 3 |
| Imperialism (1997) | 33,598,145 | 441 |
| Imperialism II: Age of Exploration (1999) | 379,525 | 354 |
| Imperialism: Concert of Europe (2024) | 0 | 0 |
| Imperishable Memories (2018) | 317 | 10 |
| Imperishable Night (2004) | 96,018,369 | 9,037 |
| Imperium (1990) | 21,460,083 | 2,062 |
| Imperium (1992) | 289,891 | 350 |
| Imperium AO (2004) | 74,388 | 113 |
| Imperium Galactic War (2013) | 55,694 | 33 |
| Imperium Galactica (1997) | 566,959 | 455 |
| Imperium Galactica II: Alliances (1999) | 748,942 | 525 |
| Imperium Galactum (1984) | 2,491 | 5 |
| Imperium Romanum (2008) | 1,301,119 | 637 |
| Imperiums: Greek Wars (2020) | 1,086,883 | 828 |
| Imperivm: Great Battles of Rome (2005) | 2,058,724 | 844 |
| IMPETUM (2024) | 444 | 5 |
| Impire (2013) | 1,688,853 | 663 |
| Implements of Hell (2021) | 1,114,538 | 250 |
| Implosion (1987) | 15,439,619 | 434 |
| Implosion: Never Lose Hope (2015) | 4,616,072 | 1,533 |
| Import Tuner Challenge (2006) | 1,261,246 | 988 |
| Impossaball (1987) | 5,010 | 23 |
| Impossamole (1990) | 91,903 | 133 |
| Impossiball - Gamers Challenge (2019) | 28,198 | 7 |
| Impossible Creatures (2003) | 14,284,024 | 1,658 |
| The Impossible Dungeon (2012) | 169,188 | 57 |
| The Impossible Game (2009) | 211,896,823 | 4,159 |
| The Impossible Knight Runner (2022) | 42 | 1 |
| Impossible Maze (2020) | 160,067,114 | 124 |
| Impossible Mission (1984) | 6,882,295 | 480 |
