Grand Vegas Crime is an open-world action game set in a city modelled on Las Vegas. You move freely around the map on foot or in vehicles you commandeer, take on missions, and cause the kind of trouble the genre is known for.
It's a browser take on the open-world crime formula — smaller than the games that inspired it, but with the core loop of a city to move through and objectives scattered across it.
No — it's an open-world browser game inspired by the genre. Rockstar's Grand Theft Auto titles are separate paid games.
Yes — helicopters are among the vehicles you can take, and they're by far the fastest way across the map.
Yes, though it's a 3D open world — close other tabs on older hardware.