| Contra - Mountain Challenge | Trax | Contra | Action > Shooter | NES | G, L, T, GP | Complete | 1.0 | 21 Dec 2013 |
| Contra - Zeng Ge Hack | Zeng Ge | Contra | Action > Shooter | NES | L, O | Complete | 1.0 | 03 Aug 2012 |
| Contra 2p scroll fix | Ti | Contra | Action > Shooter | NES | O | Improvement | 1.0 | 20 Mar 2021 |
| Contra 7 EX (Heavy Contra) | Hammer☆Keyboard☆Studios | Heavy Barrel | Action > Shooter | NES | G, T, O | Improvement | 1.0 | 12 Jul 2021 |
| Contra Aoi Version | AzStar | Contra | Action > Shooter | NES | G, L, T | Complete | 1.8 | 02 Feb 2020 |
| Contra Hard Corps Hit Points Restoration Hack | MrNemesis | Contra: Hard Corps | Action > Platformer | GEN | GP | Improvement | 1.0 | 22 Aug 2011 |
| CONTRA HARD CORPS PROBOTECTOR | IT.GAMER | Contra: Hard Corps | Action > Platformer | GEN | G, GP | Complete | 1.1b | 06 Jan 2022 |
| Contra Hard Corps: Stationary Fire+ | DUSTINODELLOFFICIAL | Contra: Hard Corps | Action > Platformer | GEN | GP | Improvement | 1.0 | 04 Sep 2019 |
| Contra Hardest Mode | Nesrocks | Contra | Action > Shooter | NES | G, T, GP | Improvement | 1.0 | 18 Jan 2020 |
| Contra III Slowdown Removal | Vitor Vilela | Contra III: The Alien Wars | Action > Platformer | SNES | GP | Improvement | 1.3 | 05 Oct 2019 |
| Contra III: The Alien Wars FastROM | MaxwelOlinda | Contra III: The Alien Wars | Action > Platformer | SNES | O | Improvement | 1.0 | 15 Nov 2021 |
| Contra III: The Alien Wars Restoration | SCD | Contra III: The Alien Wars | Action > Platformer | SNES | O | Improvement | Final | 29 Jun 2017 |
| Contra jump control | Evgeny | Contra | Action > Shooter | NES | GP | Improvement | 1.0 | 18 Sep 2020 |
| Contra MMC5 Patch | RetroRain | Contra | Action > Shooter | NES | O | Improvement | 1.0 | 10 Apr 2015 |
| Contra UNROM to MMC3 Hack | infidelity | Contra | Action > Shooter | NES | O | Improvement | 1.0 | 20 Jul 2013 |
| Contra: Easy Mode | iridium_ionizer | Contra | Action > Shooter | NES | GP | Improvement | 1.0 | 15 Feb 2021 |
| Contra: Hard Corps - INVASION v3.3 | IT.GAMER | Contra: Hard Corps | Action > Platformer | GEN | G, S, L, T, GP, O | Improvement | 3.3 | 02 Oct 2020 |
| Contra: Hard Corps Enhancement Hack | Jon Najar | Contra: Hard Corps | Action > Platformer | GEN | T, O | Improvement | Super Cham | 27 May 2012 |
| Contra: Liquid mod | Mr2 | Contra | Action > Shooter | NES | GP | Improvement | 0.1 | 30 Dec 2018 |
| Contravania - Ecclesia Edition + | ncoZ | Castlevania: Order of Ecclesia | Role Playing > Action RPG | NDS | G, S, L, T, GP | Complete | 1.0.0 | 21 Nov 2022 |
