Grand Theft Auto III / Vice City / San Andreas are three of the best games in existence, in my opinion.
It isn't because of the killing.
It isn't because of the hookers.
It isn't because of the missions.
It's because of the freedom to roam around an expansive city and steal/buy cars and just drive around, walk around, and interact with your environment, by purchasing items, weapons, etc.
I had both of them installed on my Windows installation before I wiped it, and I was wondering if a free/open source game exists with the freedoms of Grand Theft Auto, even if limited, that exist for Linux (in source or compiled binaries). Are there? If so, which and where?
I mean, I would love a game where I can just roam around a city and use cars to get places, etc. Even if it's just the engine, with no missions.
Does one / multiple game(s) exist?
Also, what do you call this genre of game?