The IGG crack for v0.5.5 works—it won't crash, and the physics are still the best in the business. But you are playing a 5+ year-old beta of a game that has revolutionized its own engine twice since then.

Do not download this. The official BeamNG.drive demo (free on Steam) offers a more modern slice of the physics. If you must pirate, find a v0.30+ repack. v0.5.5 is museum piece.

IGG-Games has been known to inject adware into newer executables post-2021. This v0.5.5 release predates most of those issues, but always run Malwarebytes after any IGG download.