Other improvement rom hacks

==GBA==
Breath of Fire
- Rebalances the game to play like the later games in the series and some tweaks  https://www.romhacking.net/hacks/3214/

Breath of Fire 2
- Restores the original SNES palettes   https://www.romhacking.net/hacks/902/
- Restores the original SNES music   https://www.romhacking.net/hacks/3765/

Final Fantasy IV Advance
- Restores the original SNES music  https://www.romhacking.net/hacks/969/

Final Fantasy V Advance
- Restores the original SNES music, and reduce slowdown  https://www.romhacking.net/hacks/563/

Final Fantasy VI Advance
- Restores the original SNES music, and reduce slowdown  https://www.romhacking.net/hacks/657/

Sword of Mana
- Improved controls for cycling weapons/spirits  https://www.romhacking.net/hacks/4913/

Super Ghouls N' Ghosts
- Restores some Japanese content such as crosses on coffins  https://www.romhacking.net/hacks/3560/

Super Mario Advance
- Removes all voices and add the SNES sound instead  https://www.romhacking.net/hacks/2571/

Super Mario Advance 2: Super Mario World
- Removes all voices and add the SNES sound instead  http://www.romhacking.net/hacks/2564/

Super Mario Advance 4: Super Mario Bros. 3
- Removes all voices and add the SNES sound instead  https://www.romhacking.net/hacks/2566/

Yoshi's Island: Super Mario Advance 3
- Removes all Yoshi voices and add the SNES sound instead  http://www.romhacking.net/hacks/2590/

Zelda A Link to the Past: Four Swords
- Removes sword swinging voice, add voice from ALBTW for all other actions  https://www.romhacking.net/hacks/4561/
Note: Requires EUR rom, USA save compatible



==GBC==
Donkey Kong Land II
- Keep banana coins after turning off the game  https://www.romhacking.net/hacks/3878/
- Removes the screen flashing effect in the glimmer galleon stage where the screen becomes dark  https://www.romhacking.net/hacks/3879/
- Changes the music to be more in line with the SNES counterpart  https://www.romhacking.net/hacks/3873/

Mega Man Xtreme
- Unlocks Xtreme mode from the start without complete save data
https://www.romhacking.net/hacks/5020/

Mega Man Xtreme 2
- Unlocks Xtreme mode and boss rush mode from the start without complete save data
https://www.romhacking.net/hacks/5021/
- X and Zero share the same health upgrades when collected  https://www.romhacking.net/hacks/5032/



==GB==
Kirby's Pinball Land
- Adds color to the game  https://www.romhacking.net/hacks/6079/

Tetris
- Adds improved gameplay elements to modernize the game  https://www.romhacking.net/hacks/5813/




==SNES==
Harvest Moon
- Quality of life improvements  https://www.romhacking.net/hacks/4056/

Mystical Ninja Goemon
- Removes passwords and adds a saving system, new title screen, fixed some text, restore some Japanese things like Goemon and Ebisu  https://www.romhacking.net/hacks/4478/

Ninja Warriors Again (JP)
- Replaces the green blood with red blood

The Legend of the Mystical Ninja
- Adds a save system in place of passwords, re-translated some text, restore Japanese content   https://www.romhacking.net/hacks/4478/




==NES==
Back to the Future
- enhances the title screen, Marty's sprites, adds infinite lives, and corrects the music speed  https://www.romhacking.net/hacks/2638/

Ghost Busters
- Remasters the game with new graphics, quality of life, and better gameplay mechanics  https://www.romhacking.net/hacks/4703/

Ghosts 'n Goblins
- Restores the original cross weapon sprite from the Japanese version, and fixes the text to be
less Engrish sounding  https://www.romhacking.net/hacks/4830/

Metal Gear
- Speeds up text in dialogue  https://www.romhacking.net/hacks/3458/
- Open doors automatically if you have the correct key card  https://www.romhacking.net/hacks/2445/
- Grammer fixes and palette fixes, to resemble the MSX version  https://www.romhacking.net/hacks/4109/

Pacman
- Restores the graphics from the arcade version  https://www.romhacking.net/hacks/5034/

Super Mario Bros. 3
- Combines Super Mario bros 1,2,3, lost levels, and Mario Bros into one game in an "All-Stars" package. With save files for each game  https://www.romhacking.net/hacks/2422/




==Sega Genesis==
Batman Returns
- Can save the game to SRAM   https://www.romhacking.net/hacks/5687/

Batman Revenge of the Joker
- Can save the game to SRAM   https://www.romhacking.net/hacks/5789/

Comix Zone
- Can save the game to SRAM   https://www.romhacking.net/hacks/5730/

Contra Hard Cops
- Can save the game to SRAM   https://www.romhacking.net/hacks/5976/

Desert Strike
- Can save the game to SRAM   https://www.romhacking.net/hacks/5740/

Ecco the Dolphin
- Can save the game to SRAM   https://www.romhacking.net/hacks/5761/

Mega Bomberman
- Can save the game to SRAM   https://www.romhacking.net/hacks/5757/

Phantasy Star II
- Bug fixes and text edits to fix typos from translation errors, includes a fast walk speed patch  https://www.romhacking.net/hacks/2132/

Rocket Knight Adventures
- Can save the game to SRAM   https://www.romhacking.net/hacks/5971/

Rolling Thunder 3
- Can save the game to SRAM   https://www.romhacking.net/hacks/5784/

Splatterhouse 3
- Can save the game to SRAM   https://www.romhacking.net/hacks/5762/

The Lion King
- Improved colors  https://www.romhacking.net/hacks/2177/

Vectorman
- Can save the game to SRAM   https://www.romhacking.net/hacks/5785/

X-Men 2
- Can save the game to SRAM   https://www.romhacking.net/hacks/5684/

Zombies Ate my Neighbors
- Can save the game to SRAM   https://www.romhacking.net/hacks/5695/



==PlayStation 1==
Xenogears
- Remove fullscreen flashes during battles  https://www.romhacking.net/hacks/5048/

Digimon World 2
- Various fixes and improvements  https://www.romhacking.net/hacks/2587/