Dolphin Emulator's Release 2606 delivers Game Boy Player support, fulfilling a feature request that sat open for over 16 years. The implementation leverages mGBA, which was integrated into Dolphin five years ago to solve Game Boy Advance connectivity issues in GameCube titles. Developers Billiard and endrift completed the work in a rush for April Fools' Day, initially missing audio problems that became obvious once testing expanded.

The Game Boy Player peripheral allowed Game Boy Advance games on GameCube by essentially embedding actual GBA hardware. Nintendo chose this approach over pure emulation due to the technical complexity, as demonstrated by Datel's flawed Advance Game Port attempt. Dolphin's solution uses the integrated mGBA core to emulate the hardware-software communication between systems, avoiding the need to build a separate emulator from scratch.

Beyond Game Boy functionality, Release 2606 makes The Key of Avalon fully playable with support for five emulator instances enabling four-player plus server configurations. Graphics Mods also resolved a longstanding high-resolution rendering issue affecting flagship titles throughout Dolphin's history. Retro Achievements support extends to Wii games, letting players compete on leaderboards.

The rushed April Fools' launch initially exposed audio processing flaws that testing with the official startup disc failed to catch. After rapid fixes guided by GameCube expert extrems, the implementation stabilizes in this release. Users can now load Game Boy games through the GUI's ROM setting and run either the startup disc or Game Boy Interface homebrew.