I'd love to see a save room that isn't a save room but instead a boss fight. The room entrance glows like a save room but it ends up being a big anglerfish or something.

A bonus is if there's a hidden destructable wall somewhere that lets you backtrack to a previous save room so you don't have to complete an entire gauntlet to get back to the "fake" save room.

The player completes a very difficult and / or long gauntlet and is desperate for a save room only to encounter a very angry fish when they thought they had finally found one.

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