Dotz.io

Dotz.io is an Agar-style game produced by Clown Games which features unique gameplay through leveling up.

Gameplay
Once spawned, players must collect the small, circular food laying around the map. Their maximum size is denoted by a black dashed circle, which grows with each level up. They must avoid larger players, denoted by a red dashed circle, and try to eat smaller players, denoted by a green dashed circle. Players can boost using right click. Players that enter the red map border have four seconds to return to the map or they get killed.

Only score gained from eating other players' raw mass and the food lying about can level players up. Score such as Tifo's 26 million score do not correspond to his true level, which should have been more than 400.

Skins
While there are about 20 default skins, more can be unlocked by sharing a high score of social media or getting the mobile app.