GBC Pokémon Prism (Hack) GBC ROM

[CSmith327]

Game Description:​

Pokémon Prism is a super customized Pokémon Crystal mod that takes place in a previously unexplored region. It contains new mechanics unseen in its inspired franchise, while refining existing gameplay. Boasting an expansive landscape to adventure in filled with unique challenges, fresh areas to explore, and new ways to play, Pokémon Prism is an entirely new experience that gamers of all ages are sure to enjoy!

Key Features:​

• Trainer Customization - Select from a wide range of styles!
• New Pokémon - Catch and tame up to 251 monsters ranging across the generations.
• Play as your Pokémon - Directly control your team members!
• Explore New Regions - Discover up to 6 regions, both new and old!
• New Trainers and Leaders - Earn up to 20 badges!
• Unique Storytelling - Take a journey to create your legacy!
• Custom Music - Featuring music tracks from 8 talented artists!
• Enhanced Visuals - Custom graphics with some sprites and animations by SourApple

Hack Credits:​

Type: Total Conversion/New Game/Story
Original Developer: Koolboyman
Further Developement: RainbowDevs
Released by: RainbowDevs
Initial Release Date: Dec. 19th, 2016
Current Version: v0.95 build 254 (Hotfix 5)
Patch Date: August 24th, 2023
Status: Considered to be in beta, but all story and post-game content is complete.

Source and details: https://rainbowdevs.com/title/prism/

Translation Credits:​

Released By: Mumantai
Language: German
Status: Fully Translated
Patch Version: v1.1.6
Date: Feb. 1st, 2026

Source and details: https://github.com/Mumantai/Prism_German_Localization

Yo guys! This is (IMO) the best romhack for Pokémon on Game Boy Color. It's super epic in scale with 6 regions and 20 Gym Badges (and everything else mentioned in the features) One of the coolest things is being able to control and play as your Pokémon in interesting puzzle and exploration segments. It's also a loose sequel to Pokémon Brown (also by Koolboyman) since it features the same regions. The original version by Koolboyman was hit with a Cease and Desist by Nintendo and he had to quit development on it. RainbowDevs then later picked it up and finished it and added even more content. Since this game was once targeted by Nintendo I made sure that this post will not be added on the CDromance site and thus can only be found here (to help evade Nintendo) If you're like me and a Pokémon nut I think you'll deeply enjoy this massive romhack. It was just wrong for it not to be on the Repo.

Download Links​

• Pokémon Prism (Hack) GBC ROM

 

[Erik Óptero]

Updated the German translated version to v1.1.8 from April 24th. Here's the changelog/download of the patch.

Vielen Danke sehr desu, ^-^/.

 

[CSmith327]

Updated the German translated version to v1.1.8 from April 24th. Here's the changelog/download of the patch.

 

[Xalusc]

Regarding my previous post, I forgot to add actual patches to the repo, making it so one would have to build it from source. Oops!
You can find the patch (both normal and debug versions) for my custom "back to all caps" Prism at https://github.com/Xalusc/POKEPRISM/releases/tag/v0.95.254

 

[Erik Óptero]

20 pics are the limit, haha! xd/<3

 

[Soma_Shotgun]

I remember doing a blind nuzlocke of this and wiping on the third gym maybe. Haven't touched it after that.

 

[Vincey]

Gonna download it out of respect for their hustle. This type of behaviour really should get you get whipped a good bunch of times.

rules were made to be broken

 

[C.Endfield]

Real ones will remember how the devs got a cease and desist days before it was due to launch on Christmas Day and the mad men released it anyway

Gonna download it out of respect for their hustle. This type of behaviour really should get you get whipped a good bunch of times.

 

[Sp1ce_D!n0]

Real ones will remember how the devs got a cease and desist days before it was due to launch on Christmas Day and the mad men released it anyway

 

[RageBurner]

This one looks like a real gem, thanks for putting it here!

 

[CSmith327]

Anyone know if EXP Share is an option? Honestly, I can't be assed to spend a bunch of extra time mashing X while walking around in circles for each individual Pokémon.

EXP Share is in the game but can't be obtained until pretty far into it. It works for only the Pokemon holding it and not party wide like in other ones

 

[Tzelanit]

Anyone know if EXP Share is an option? Honestly, I can't be assed to spend a bunch of extra time mashing X while walking around in circles for each individual Pokémon.

 

[Xalusc]

If anyone's interested, I made a version that makes Pokémon names, moves, items, places, NPCs etc all caps again. Can't really explain why, but seeing those things lowercase in a Gen 2 game bothers the crap out of me.

Anyway, you can find it at https://github.com/Xalusc/POKEPRISM