| Inscryption (2021) | 250,953,740 | 56,250 |
| Insect Adventure (2021) | 32,749 | 47 |
| Insect Seeker (2022) | 164 | 5 |
| Insect Worlds (2022) | 67,097,183 | 69 |
| Insectarium (2023) | 3,968 | 14 |
| Insecticide (2008) | 241,427 | 271 |
| Insecticide: Part 1 (2009) | 6,353 | 27 |
| Insectoid Descent (2024) | 1,530 | 16 |
| Insector X (1989) | 564,621 | 533 |
| Insects in Space (1989) | 3,798 | 24 |
| Insectum - Epic Battles of Bugs (2024) | 2,291 | 19 |
| Inside (2016) | 713,916,276 | 73,585 |
| Inside a Star-filled Sky (2011) | 252,025 | 21 |
| Inside Her (bedroom) (2020) | 14,590 | 14 |
| Inside Jennifer (2022) | 125,102 | 54 |
| Inside My Radio (2015) | 387,311 | 376 |
| Inside Outing (1988) | 6,588 | 22 |
| Inside Pitch 2003 (2003) | 21,880 | 49 |
| Inside Soccer (2021) | 97,904 | 15 |
| Inside The Crystal Mountain (2024) | 178 | 5 |
| Inside the Labs (2024) | 206,848 | 169 |
| Inside the machine (2024) | 59,050 | 28 |
| Inside: Before Birth (2016) | 570,165 | 38 |
| Insider Tales: Vanished in Rome (2009) | 26,125 | 14 |
| Insider Trading (2025) | 836,519 | 87 |
| INSIDIA (2017) | 69,510 | 46 |
| Insights - Maniac Vortex (2021) | 413 | 9 |
| Insmouse no Yakata (1995) | 224,091 | 28 |
| Insomnia: The Ark (2018) | 2,462,284 | 1,416 |
| Insomnia: Theater in the Head (2022) | 500,203 | 152 |
| Insomnis (2022) | 6,620,642 | 2,067 |
| The Inspector (2025) | 37,658,189 | 1,587 |
| Inspector Detective: Private Eye (2022) | 727 | 1 |
| Inspector Gadget (1993) | 18,710,194 | 1,998 |
| Inspector Gadget and the Circus of Fear (1987) | 54,651 | 21 |
| Inspector Gadget Racing (2003) | 20,119 | 29 |
| Inspector Gadget: Advance Mission (2001) | 57,438 | 76 |
| Inspector Gadget: Gadget's Crazy Maze (2001) | 240,456 | 110 |
| Inspector Gadget: Mad Robots Invasion (2003) | 289,119 | 81 |
| Inspector Gadget: MAD Time Party (2023) | 320,278 | 319 |
| Inspector Gadget: Operation Madkactus (2000) | 16,040 | 45 |
| Inspector Parker (2003) | 32,282 | 69 |
| Inspector Schmidt - The Ebbing (2025) | 8,645 | 88 |
| Inspector Waffles (2021) | 146,073 | 561 |
| Inspector Waffles Early Days (2024) | 6,804 | 64 |
| Inspektor Zebok: Das Erbe (1994) | 0 | 0 |
| Instacalm VR (2019) | 694 | 1 |
| Instant Brain (2011) | 25,263 | 57 |
| Instant Chef Party (2020) | 37,660 | 37 |
| Instant Sports Paradise (2021) | 53,764 | 57 |
| Instant Sports Summer Games (2020) | 201,410 | 36 |
| Instant Sports Tennis (2021) | 1,628,137 | 51 |
| Instant Tennis (2018) | 15,094 | 17 |
| Instant War (2018) | 143,761 | 74 |
| Instinct (2007) | 3,634,050 | 122 |
| Instinction (2022) | 2,940,500 | 252 |
| The Institute (1981) | 11,515,160 | 1,827 |
| Instruments of Chaos starring Young Indiana Jones (1994) | 8,095,089 | 76 |
| Instruments of Destruction (2022) | 33,447,605 | 1,116 |
| The Instruments Of Faith: Padua's Destiny (2023) | 11,423 | 4 |
| Insulated at the bottom (2020) | 0 | 0 |
| Insurgence - Chains of Renegade (2018) | 3,939 | 55 |
| Insurgence - Second Assault (2020) | 2,930 | 12 |
| Insurgency (2014) | 48,495,145 | 13,367 |
| Insurgency: Modern Infantry Combat (2007) | 112,314 | 75 |
| Insurgency: Sandstorm (2018) | 269,815,804 | 84,465 |
| Insurmountable (2021) | 54,323,886 | 5,059 |
| Insurrection: Cyborgs Awakening (2022) | 404 | 7 |
| Integument (2023) | 407 | 5 |
| Intelligence: Anime girls (2018) | 437 | 1 |
| Intelligence: Cats (2018) | 10,471 | 2 |
| Intelligence: Dinosaurs (2018) | 306 | 2 |
| Intelligence: Dogs (2018) | 11 | 1 |
| Intellivision Lives! (1998) | 294,798 | 212 |
| Intellivision World Series Baseball (1983) | 7,000 | 9 |
