Below is a guide to the best methods for bringing the Underground to your Android device using GBA or other retro-style formats. 1. Undertale GBA & Game Boy Demakes
Navigate to your "GBA ROMs" folder within the emulator's file browser and select the Undertale file. undertale gba download android
These files use the .gba extension and require specific software to run on Android. Step-by-Step Setup Guide Below is a guide to the best methods