A racing game that has a very nice track builder and is very open to modding. Its focus is on the individual driver and the time they achieve on a track.
Flying for hundreds of meters, drifting under water, going at high speeds through multiple loopings, sliding on ice and so much more is totally possible with Trackmania.
Try it, the base game is free and their pricing for online services and cups is totally fine.
Ah man, I've been playing various Trackmania titles since 2013 but I still struggle with some of the campaign author medals and my placements are only around top 5-10% of players. Better than average sure, but not "exponentially" [sic] despite years of experience :(