Your blob will follow your mouse. Eat the dots to get bigger, you can eat smaller blobs but will get eaten by bigger ones. You get slower the bigger you are and decay (lose) mass overtime (the bigger you are the more mass you lose). Your blob will not move if your mouse is touching it. When you get over 1000 you decay super fast, if you get over 2000 you decay even faster. Full screen is recommended. If you want to end your game to submit your high score, press type "Quit"
Go play Agar.io. After you are really big and you stop to game, it might glitch because of the size. Just reload and everything will be fine.