Final Purgatory is a great remake of the popular horror game FNAF 1. It has a randomizer for the pizzeria rooms and a lot of settings that can be changed (difficulty, map size, number of animatronics, ...).
The game's goal is the same as it was with its famous predecessor: Survive 5 nights, from midnight to 6 a.m., by stopping animatronics from getting into your office at any cost. To do that, you'll need to keep an eye on a lot of cameras and close the doors at the right time so you don't waste power. Watch out for special animatronics like Foxy or Puppet that need more than just keeping the doors shut (see the help section of the game).
Have fun and good luck!