Wormo.io

Wormo.io is an excellent video game with worms theme in which you need to eat gems to become bigger

HOW TO PLAY

To get bigger, eat the gems on the map. Make sure you don't collide with other worms. Shoot other players to push them away, and watch out for those who are shooting at you.
As you grow larger, your shots will become more powerful, giving you an advantage over other worms.
The bigger you get, the slower you'll spin.
Use the boost to run away from danger or capture another worm. Your worm can only boost for 5 seconds before it becomes exhausted and needs to rest. Boosting does not cost any gems, but it does have a 5-second cooldown.

RULES FOR SUCCESS

Avoiding head-on collisions is a good idea because you stand a 50% chance of dying.
If you're big enough, you can fire smaller worms into a swarm of other worms for maximum devastation.
If you're playing with a friend and wish to partner up, use the minimap to see where you are.
When you're little, take advantage of the lower turning radius to outmaneuver larger worms.
To tame larger worms, work along with other little worms.