Squadd io is a multiplayer 3D game you can play with other players around the world. The map is in a 3D world and you can use tons of different types of weapons that can be found around the map.
How to play Squadd.io
To play squadd.io, all you do is use the standard W, A, S and D keys to move, and left click to shoot in enemies.

The best strategy when playing squad.io is to stay constantly on the map in circular motion. This makes it harder for opponents to hit you, and gives you the ability to shoot back and hit people who follow you.