Tap once anywhere to pop a jelly. Its shockwave pops and shoves its neighbours into a chain reaction. Pop at least the target share of jellies to clear each round. You have three hearts; a full screen clear wins one back. Keyboard: arrow keys aim, Space or Enter pops.
Jellyquake is free, with no ads. The pass is cosmetic and never changes your score.
After paying you get a key. Paste it here once; this device remembers it.