The core emulation engine is written in C/C++ (vba-next) and compiled to WASM for near-native execution speeds in the browser.

: Unlike standalone emulators (such as mGBA or VisualBoyAdvance), there is nothing to download. This makes it a go-to for users on restricted devices, such as school Chromebooks or work laptops.

An emulator is software that mimics GBA hardware on your modern device. All of the following are (no hidden fees).