Celestia.io is a free MMO Io game that you can play online against a lot of people at once. Take control of a bright dot and roam around the outer space to find the winning chance. In other words, you need to work hard and strategically to rank up and occupy the top spot as soon as possible. Like Agar.io, you should enlarge and become the biggest player if you want to dominate. So, the first step is to eat food orbs to grow in size. After that, you will hunt down smaller opponents. Make them exploded into pieces, get close and swallow the energy that they leave. In case you are able to eliminate the larger one, you will increase the mass faster. But, do not be too greedy or you will get trouble. Note that your movement speed will be reduced while you are consuming. That makes you very vulnerable. Be careful! Try to survive until the end!
How to play
Use the mouse to move, left click to fire, Space or right click to boost.