The RANDOMAZE challenge (1.3) - It's not just a maze, it's 1,359713x10^185 mazes!

THE CHALLENGE
Survive the Randomaze!
It's a special maze composed of a grid of 18x18 rooms, the configuration of the doors between the rooms changes periodically so that it's structure is never equal to itself!
There are 4 entrances, only one exit and two special rooms with a keycard for the exit room, this keycard is the only way out!

THE RULES
1 Player
Enter the maze, find a keycard, find the exit, beat the game!
2 Players
There are keycards for everyone, wins the first who exits
3-4 Players
There aren't enough keycards! Choose an entrance, take the equipment, get a keycard or kill another player to obtain the one he found, survive and find the exit
5+ Players
Like for 4 players, but play in 4 teams that share the equipment

TECHNICAL INFO
Randomaze
4 entrances
1 exit
325 rooms
615 randomized doors
128 items hopper clock
50% of probability of a door to be open
Number of possible mazes:
2^615≈1,359713x10^185

NOTES
I know that similar ideas may have been already created but I think that this design of my invention is the most compact and practical, and also easily stackable, and with the minimum lag possible.

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