Cosmic Fusion

Cosmic Fusion is a relaxing physics puzzle where tiny space orbs rain down into a glowing glass box and your job is to make them grow. Drop two matching orbs next to each other and they fuse into the next, bigger world: stardust becomes a pebble, a pebble becomes an icy comet, and so on through moons, ember planets, blue oceans, gas giants and ringed worlds, all the way up to a blazing sun and finally a Nova. Merge two Novas and they vanish in a supernova worth a huge bonus.

Aiming is simple. Slide your finger or move the mouse to choose where the next orb falls, then tap, click or release to let it go. A dotted guide and a preview of the following orb help you plan ahead. Because everything is simulated with real physics, orbs roll, bounce and nudge each other, so a single lucky fusion can trigger a chain reaction. Chain merges quickly to build a combo multiplier and watch the points climb.

The box has a red danger line. If orbs stay piled above it for too long, the run ends, so keep the pile low and tuck the big planets into the corners. Feeling stuck? Watch a short rewarded video to blast one orb out of the box and buy yourself some breathing room.

Cosmic Fusion works on phones, tablets and desktop browsers, saves your best score on your device, and includes calm music and sound effects that you can mute at any time. A run lasts a few minutes, but the quest to reach the Nova will keep you coming back. How high can you build?