Overview
Challenge the legendary guardian of Waterfall — the fish-warrior Undyne. Raise the Green Soul’s shield to deflect flashing spears, then swap to the agile Red Soul to weave through volleys. Pick a difficulty from Relaxed to Hardcore; on the hardest setting stay alive as long as you can to climb the global leaderboard. Keep your DETERMINATION burning and claim victory!
12,359 players online
How to play
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Open the game
Press Play now and the game opens on its own screen.
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Follow the in-game instructions
The controls and goals are shown inside the game as you play.
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Use the game menu
The floating button over the game reloads it, saves it to your favourites, or takes you back out.
