Topsy-Turvy Island is an island in the Southern Frontier. It undergoes an earthquake and turns inside-out by nightfall, and restores itself by dawn. It is unknown how the native wildlife or landmarks survive this process.
Some of the island's flora and rocks retract into the earth and sprout back interchangeably.
The CyberSquad is later trapped here when Hacker falsely agrees to cure to Motherboard's virus if they could beat his game.