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A new planet appears at the top of the screen before every move. Drag it left or right, choose a landing spot, and release it into the bubble. When two identical planets touch, they combine and transform into a larger planet. The process repeats throughout the game, gradually creating bigger and bigger celestial bodies. The ultimate goal is to keep merging while preventing the bubble from becoming overcrowded.
Dropping a planet directly onto a matching one is not always the best move. Sometimes it is worth placing a planet nearby and waiting for gravity to pull objects together naturally. A well-positioned drop can create several merges in a row, freeing valuable space and producing a much larger planet than expected.
Players who think one or two moves ahead usually survive much longer than those who focus only on the next merge.
The board feels huge during the opening minutes. Later, large planets begin occupying areas that once held several smaller ones. Safe landing spots become harder to find, and every mistake becomes more expensive. One awkwardly placed planet can block future merges and make the entire bubble harder to manage. Keeping space available is just as important as increasing your score.
Small merges help keep the board organized, but bigger planets are what drive high scores.
Creating them requires patience because several generations of planets must be combined first. Reaching a new planet type often feels rewarding, especially when it comes from a chain reaction that clears part of the board at the same time.