GB Bridge Turns Game Boy Games Into Native GBA Titles

Iván Delgado has taken a familiar emulation dream and pushed it somewhere stranger: not just running Game Boy games on a Game Boy Advance, but making them behave like native GBA software. His GB Bridge project is a modified GB-to-GBA emulator built around what Delgado calls a fantasy console, a setup he says is closer to a redesigned handheld than a conventional wrapper.

That distinction matters. Delgado described GB Bridge as “basically a GBC with a different memory map, a bigger screen, and extra inputs,” and said he uses special registers to trigger native GBA routines from inside the emulator. In practical terms, that is the difference between a game merely being displayed on GBA hardware and one that can tap the machine’s own strengths while still preserving the original Game Boy feel.

Delgado said he has been working toward this for a long time and that the GIFs he posted are mockups of the end goal, not a finished release. He said key parts have already been tested and are feasible, but also warned that releases should not be expected anytime soon. For now, he is working on Super Mario Land, which fits neatly with the rest of his ROM-hacking history.

That background is a big part of why GB Bridge makes sense. Delgado’s prior work includes colorization hacks for Super Mario Land and Super Mario Land 2: Six Golden Coins, and his site has long argued that every GB game is only a few routines away from being a full-fledged GBC game. His GitHub profile reinforces that same lane, with repositories like SuperMarioLandDX and HowToCode pointing back to years of practical tinkering with Game Boy code rather than broad theory.

The idea is not entirely new, but GB Bridge is aiming at a more hardware-native endpoint than the usual emulator-in-a-box approach. Earlier tools such as Goomba Color wrapped Game Boy Studio ROMs for GBA play, while GBSenpai, built by Asie, aimed to port GB Studio games so they ran natively on the GBA. GB Bridge sits in that same lineage, but its pitch is sharper: keep the portable authenticity, gain real hardware behavior, and make the GBA feel like it grew a second life for 8-bit software.