Not sure if it was influenced/inspired by .. but it reminds me of the film "Cube" from 1997 .. They wake up in square rooms, each one numbered.. they can choose an exit on any of the walls which takes them to another cube..some are safe, others are deadly.. there are puzzles and mystery.. They know they are part of some massive experiment given the size and number of rooms.. but no idea who their captors are.
This gives me those vibes.. as they travel through they sometimes run into other people and form a group