Cosmo Merge

Cosmo Merge is a drop-and-merge physics puzzle set in space. Celestial objects fall into the play area where you choose, and two identical objects that meet combine into the next one up the ladder. The developer spells out the start of that ladder: two Asteroids become a Comet, and two Comets become a Moon. From there the chain climbs through planets, gas giants and stars, and the top of it is a Black Hole.

The game ends when space runs out, so the score is about how far up the ladder you get before the area fills. Objects behave with physics rather than snapping to a grid, so they roll and settle. The developer makes a point of the visuals: animated solar flares, a Black Hole with a spinning accretion disc and Supernovas when things go up. It is played with the mouse in a landscape frame.

Use the mouse to choose where the next celestial object drops, then release it into the play area. When two identical objects touch, they merge into the next object in the chain, such as two Asteroids making a Comet. Keep dropping and merging to build bigger bodies and raise your score. The game ends when space runs out.

Every merge needs two of the same object, so drop each new piece next to its twin where you can. Keep larger bodies together on one side and small ones on the other. Since pieces settle with physics, leave room for things to roll rather than packing a corner tight.

A physics drop-and-merge game with a space theme. Landscape frame (800 by 600). Mouse controls. The chain runs from Asteroid to Comet to Moon and on to a Black Hole. Play continues until space runs out.

Fruit Merge Arena works up a similar ladder of dropped fruit to a watermelon, and Niche Shift climbs an ocean food chain from Plankton all the way to the Leviathan.