AquaBlox

A color-matching puzzle with a sideways twist. You click a group of same-colored blocks once to highlight it and again to clear it, and bigger groups pay disproportionately more — so the real game is restraint, letting a group grow instead of taking the points now. What makes AquaBlox its own thing is the refill: cleared blocks fall, then the remaining columns slide across to close the gap, and a preview column on the left shows what is coming in from the side.