SRB2Kart is, without a doubt, the best kart racer I've ever played. The various maps, the gimmicks, it has everything I wanted in a kart racer, and it has some features that even Mario Kart can't hold a candle to. I've been following this game ever since it was announced back in 2014, and when it finally released on November 16, 2018, the game was just hard for me to put down. It's just that fun!
The main things I like about V1 Kart are the diverse stats, where every character (Custom, base, or bonus) has an equal chance at winning a race. I also like the variety of tracks the game has to offer, especially since there are levels that are based on the Sonic Adventure era, the Sonic series as a whole (both the Classic and Modern eras), as well as some other stages based on Sega's other franchises such as Persona. I also like the distance-based item roulette, as items that I can get by being in a specific place wasn't my idea of a kart racer.
If I can be honest, I, like many other people, did not like the SMK maps, mainly Vanilla Lake 2. I also did not like the level Balloon Panic from Sonic Drift 2. I found the track entertaining at first, but over time, I grew further from it.
My most favorite track in this game is Megablock Castle. I just love the effort put into the level since it was made to take place in a Lego-themed environment. Other than the scenery, the track plays so well and it's something I come back to from time to time.
I'm going to beat a dead horse here, but the main complaint about V1 Kart is the lack of a proper single player mode, which is coming to V2 Kart once everything is ready and accounted for. However, this doesn't mean I'm saying that Record Attack as a whole is bad. In fact, I actually like this mode, since it pushes me into finding shortcuts for every track in the game so I'll remember it the next time I race online.
All in all, SRB2Kart is one kart racer that's definitely worth checking out, even if you aren't into kart racing games. Seriously, play it.