: You start with a bare frame and hundreds of parts. You must manually select the correct spanner size for every bolt and tighten them one by one. Missing a single screw can cause fluid leaks, engine failure, or even a fatal crash later on.

: You must manage hunger, thirst, fatigue, urine, and stress. Forgetting to pay your electricity bill results in a blackout, and failing to turn off your sauna can literally burn your house down.

: There are no tutorials or in-game instructions. Most players rely on community wikis or YouTube tutorials just to get the engine to turn over.