Recommendations: Sonic Robot Blast 2 Kart (Patreon)

This game is as perfect a Mario Kart Remix you could possibly get.

Not only does this game absolutely nail the feeling of drifting these 16bit Karts around a wide variety of circuits, feature a notable cast of characters, allow you to play local split-screen and online up to 16 players, and allow Mod Support adding everything from new characters to tracks and gameplay additions...

...It's also completely free.

Check it out. 

Whether you're playing online with friends, or nailing time trials, it's a great time!