Play The Land Before Time: Into the Mysterious Beyond emulator game online in the highest quality available. The Land Before Time: Into the Mysterious Beyond is a Gameboy Advance game that you can enjoy on Play Emulator. This GBA game is the US English version that works in all modern web browsers without downloading. The Land Before Time: Into the Mysterious Beyond is part of the Adventure Games, Action Games, and Platform Games you can play here. PlayEmulator has many online retro games available including related games like Super Mario Land Color, Kirby's Dream Land, and Super Mario World: Return to Dinosaur Land.