A project I, and The Teszybco have been working on for a while now.

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UPDATE: A few minor flaws have been fixed, and a new schematic is now available. I've also made two annoying mistakes that aren't worth reuploading the files for: The exterior combatant access doors sign has the information backwards, and the doorway that leads to the redstone has the word maintainence (Actually spelt as maintenance) spelt wrong. Just fix these issues yourself to prevent a pointless redownload of the world or schematic. I apologize for this annoying flaw that I've made.

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This is a Redstone operated Colosseum, so there are many different things that it has:

-Floodable and drainable floor

-Piston operated control box stairway

-Exterior combatant access doors

-Interior combatant gates

-Spectator stairway access

-Arena access door

-Control box door

All these features took a LOT of time to set up properly and fit in the small area it was placed in. The exterior architecture never happened, and I don't have the creativity to make it look spectacular, so I apologize about that.

I hope you enjoy the long awaited Redstone Colosseum! :D