There can be only one!
Bonk.io is an online physics game in which you will face up to 8 players in a death game where your goal will be to remain the last man standing.
Avoid colliding with the deadly black areas, push the opponent's balls off the edge of the map, and use the "X" key to make yourself heavier.
Bonk.io features numerous maps with different game modes and even a level editor to create your own map.
See also: Bonk2.io