Slime Laboratory is a retro platform cool game online. Your mission is to help a green slime to escape from a laboratory. It will be more difficult as it seems, as you will have to overcome various obstacles and survive. Use your left and right arrow keys to move. Press up arrow to jump, down arrow to become slick and make it through tight spaces. Don’t stretch too much or your slime will explode! Collect slime on the way to increase your size. You can see your current size on the Slime-o-meter. The bigger you are, the higher you can jump. Avoid traps and lasers. Try to make it through each level alive! Step into the checkered spot to complete the level. There are 15 levels in the game and you have 5 minutes to complete each of them. The faster you are, the higher score you get. How much slime can you absorb and how big can you get in Slime Laboratory online at Cool Games?