Plain physics and controls are the main mechanic in Diner in the Storm. The game has a specific timing mechanic where you wait before moving.
Step and timing your moves are key, you must react quickly to what other diners do.
You use the spacebar or mouse clicks to interact. The physics are kind of wonky and the controls feel awkward which makes some moves frustratingly hard to predict.
Quick thinking is needed for the mechanics. Most waiting a little longer before making your move can sometimes trick the game.
Q: What are the controls? A: The spacebar or mouse clicks are used to interact.
Q: What is the objective? A: You need to persuade other diners to leave with you.
Q: What stated features are there? A: A specific timing mechanic is stated.
Q: What is the main mechanic? A: Physics and controls are the main mechanic.