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Confusia
Confusia is the most complex esolang I can come up with.
Start program
To start the program, you have to type 2763 a random amount of times in a row, and copy and paste is not allowed. If you get it wrong, the random amount changes and the file is cleared.
Keys
Keys are random numbers from 1 to 100. Every command has a key randomly generated from a seed the command number and the time added together, which is then modded to fit in 100. If you get the key wrong, the file is replaced with a PNG image of Glamrock Freddy from Security Breach with a blue pixel in the corner.
Cheating the key
If you put ê instead of 3 in the 7th 2763, every key will be 5.
Print prints a BF file that prints a Deadfish x file that prints what you put in it.