Uchu.io

Uchu.io is a multiplayer spaceship arena game in which you can design, upgrade, and build your ultimate battleship. You start off with a small ship but can add several components to it such as thrusters, reactors, missile turrets, and ion cannons. You can mine asteroids in order to gain resources needed to upgrade your ship and you fight other players in order to level up your ship and become stronger. The game has an FFA game mode in which you can instantly buy stronger ships using minerals you have gained and features faster-paced gameplay. It also has a coop game mode where you get to custom design your own ship and PVP is optional to accept.