| ISS Deluxe Real Names Patch | SalvadorC17 | International Superstar Soccer Deluxe | Sports | SNES | T | Improvement | 1.0 | 09 Aug 2016 |
| Iron Tank - Re-Nazified | Psyklax | Iron Tank | Action > Shooter | NES | G | Improvement | 1.0 | 23 Jul 2017 |
| Iron Man - Mushroom Avenger | BillyTime! Games | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP | Complete | 2.0 | 18 Jun 2020 |
| IOG Sprint Button | C-Dude | Illusion of Gaia | Role Playing > Action RPG | SNES | GP | Improvement | 3.0 | 15 Feb 2023 |
| Invisible Zombie | Leet Sketcher | Final Fantasy III | Role Playing | SNES | GP | Improvement | 1.0 | 13 Jun 2015 |
| Inverted 3rd Person Camera | Frozen_Fish | NINJA GAIDEN Black | Action > Beat 'Em Up | XBOX | GP | Improvement | 1.1 | 17 Dec 2021 |
| Invert Rotation & Y-Axis | ioev | Vagrant Story | Role Playing | PSX | GP | Improvement | 1.0 | 29 Jun 2022 |
| Intrigue of Kittens | JonnyManjiro | Super Mario World | Action > Platformer | SNES | S, L, GP | Complete | 1.1 | 05 Apr 2021 |
| International Superstar Soccer Deluxe - Libertadores da America 2020 | Manoel Messias | International Superstar Soccer Deluxe | Sports | SNES | G, S, L, GP, O | Complete | 1.2 | 01 Feb 2021 |
| International Superstar Soccer Deluxe (SA) | Manoel Messias | International Superstar Soccer Deluxe | Sports | SNES | G, L, GP | Improvement | 1.1 | 01 Mar 2021 |
| Instant fill energy when gain energy items | LSM | Mega Man 4 | Action > Platformer | NES | GP | Improvement | 1.0 | 20 Mar 2021 |
| Inspector Gadget | Garrett Gilchrist | Gumshoe | Action > Shooter | NES | G, S, T, GP, O | Improvement | 2.3 | 16 Jul 2022 |
| Insectduel's SMB1 Hack 6th Anniversary Edition | insectduel | Super Mario Bros. | Action > Platformer | NES | G, L, GP | Complete | 1.1 | 19 Nov 2011 |
| Initial D Another Stage Eurobeat Mod | Stich991 | Initial D Another Stage | Racing | GBA | G, S | Improvement | 1.1 | 14 Apr 2020 |
| Infinite Jump Fix | Dwedit | Huang Di: Zhuo Lu Zhi Zhan | Action > Platformer | NES | GP | Bug Fix | 1.0 | 14 May 2023 |
| Incoming - Voice Language Fixer | Indiket | Incoming | Action | DC | O | Bug Fix | 1.0 | 19 Aug 2015 |
| Improvements for SFPWXP | SCD | Super Fire Pro Wrestling X Premium | Sports | SNES | G, GP | Improvement | Final | 20 Jan 2022 |
| Improved Fonts and Graphics for Forbidden Siren 2 | IlDucci | Forbidden Siren 2 | Action Adventure | PS2 | G, T | Improvement | 1.0 | 12 Oct 2021 |
| Improved Equipment Stat Viewing | Rabite | Final Fantasy I & II: Dawn of Souls | Role Playing | GBA | T, O | Improvement | 1.0 | 27 Jan 2021 |
| Improved Cutscene Text | NunofYerbizness | South Park | Puzzle | GB | T | Improvement | 1.0 | 18 Jun 2020 |
