About Astro Merge

Astro Merge is a stacking puzzle game where you drop planets into a narrow column and merge identical ones to create larger celestial bodies. Each time two matching planets touch, they combine into the next size up, clearing space and boosting your score. The challenge is managing your stack height—if it rises past the danger line at the top, your run ends. Timing and placement matter more than speed here; one careless drop can block off a key merge and doom your tower.

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#.io Games
#1 Player
#Ball
#Blocky
#Fun

The game rewards planning a few moves ahead, especially when you spot a chain reaction waiting to happen. Fans of spatial puzzles and high-score chases will enjoy the quick rounds and the urge to squeeze out one more combo. You can play Astro Merge and hundreds of other browser games for free on Poki Games, no downloads required.