Short version:
1.0: Various bugs
1.01: Patch, fixed a whole bunch of issues
2.0: Only introduced a (easily defeated) tampering check after the Hot Coffee controversy
3.0: First steam release, is not based at all on 1.01 or 2.0 but on the Xbox version. Fixes from 1.01 are thus NOT IN THIS VERSION(!). Also contains many Xbox UI changes.
newsteam r1: Removes the aforementioned songs, drops support for DirectInput controllers, blacklists 5:4 resolutions. Doesn't actually have a version number anymore (and is named by the community)
newsteam r2: Unlocks 16:9 resolutions. Also doesn't contain an official version number.
Then there is the Microsoft Store version, which is based on a mobile version!
Short version: 1.0: Various bugs 1.01: Patch, fixed a whole bunch of issues 2.0: Only introduced a (easily defeated) tampering check after the Hot Coffee controversy 3.0: First steam release, is not based at all on 1.01 or 2.0 but on the Xbox version. Fixes from 1.01 are thus NOT IN THIS VERSION(!). Also contains many Xbox UI changes. newsteam r1: Removes the aforementioned songs, drops support for DirectInput controllers, blacklists 5:4 resolutions. Doesn't actually have a version number anymore (and is named by the community) newsteam r2: Unlocks 16:9 resolutions. Also doesn't contain an official version number.
Then there is the Microsoft Store version, which is based on a mobile version!