I've built a redstone-randomizing labyrinth! It has 6 exits, and only one of them opens each time you enter the maze. There are a ton of added features including time limit, payment to run the maze, automatic payout, and status indicator lights. The redstone is pretty messy, but functional and entirely enclosed. I've included signs in the machine to indicate the key parts and what they do. Includes 1 randomizer, 3 T-flipflops, 1 hopper clock, and a hopper timer. Feedback would be appreciated :)

Here'e a list of all the changes I've had recommended, and will be (hopefully) including in the AARL 2.0:

Simplified randomizer, running redstone wire over the hoppers in order to stop them. This would replace the redstone block, slime block, piston assembly, making the whole machine much more compact.