Use arrow keys to move. Chase the crystal! There are four levels. When about to complete level 3, make sure you are near the bottom on the scene, because, in level four, a line will spawn, that's dry land, and if you touch it your jellyfish will dry out. Then it's game over. You will notice when you get into the hundreds. Be careful! The first level? Easy. Just score 50 and boom you're at level 2. Level 2? A bit harder. Score 500, then you're at level 3. Level 3? A lot harder. Start at 50 and try to get to 800. Level 4? Almost impossible! Start at 50, then get 3000! That'll take practice! No wonder I never made Level 5! Well, good luck, hope you finish!