• Welcome to our world.

Crafting new authentic content with unexpected twists.

RainbowDevs are collective of passionate Gameboy developers with decades of experience.

We are coders, artists, musicians, designers, and every position in-between — crafting new stories and worlds for everyone explore while pushing the boundaries of classic, retro hardware. Everything we do runs on original, classic hardware, as our passion for the original games and worlds runs deep.

Our work

Latest News

Sheral

The first time you walk into the Seashore City gym, there’s a surprise in store. The Gym Leader in this gym is Sheral. She’s a Psychic trainer who you can fight in the beta. Speaking of the beta, the layout is slightly different between the final and the released...

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Spinning the money wheel…

It’s been a long time without an update, so it’s time to deliver something new. In the Goldenrod City Game Corner, which recently received a renovation, there’s a new game! Put down a some of your money, and get coins. A bit devious, isn’t it? But, you have to...

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UPS patching specification

Update: While rijonAdventures still uses the UPS format, we now have a different recommended method applying it to your ROM file. For up-to-date setup instructions, please click here. rijonAdventures will be supporting a new patching format called UPS. This format allows for a much bigger ROM size (more for...

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