Agma.io is one of the best online multiplayer games that you will play as a cell. You need to survive, enlarge, and earn the most gold if you want to dominate the top spot for a long time. Firstly, do not ignore moving around the map and collecting colored dots. Consume the available food and hunt down smaller players to grow in size. You can split or eject some of your mass if necessary. But, always stay away from larger guys. With the coins that you earn, you can open the shop and pick out whatever. Good luck!
How to play
Press Space to split, W to eject your mas, E to recombine. Use the mouse to move.