ameplay for the GBA version is much different as well, as it is a 2D platformer game. Rather than being non-linear, like the home console versions, the GBA version is level-based, although still visiting most of the locations from the home console versions. Combat is much more limited, done through blowing bubbles onto enemies to turn robots off or back on; robots cannot be permanently destroyed, as replacements will appear through a portal in their starting positions, so enemies are used to solve platforming challenges. SpongeBob can ride a seahorse named "Mystery" in certain levels. Like other GBA games of its era, it uses a password system rather than saves.