Driftin.io is a lap racer/battle io game that is very hard to put down.
How to play
In Driftin.io, your main goal is to finish 20 laps before anyone else. Each lap earns you a level up, which lets you improve at least 4 stats: maximum health, health regeneration, moving speed, weapon damage, and reload speed. People choose to level up their numbers so they can kill more people and take more hits, while others choose to play faster to avoid fights and get more laps in.
Have fun and good luck!