Cosmos Merge

Start with a mote of stardust and merge your way to planets, stars, galaxies — and an entire universe. A calm, cosmic idle game you can play in bursts.

Cosmos Merge is a serene idle-merge game about building everything — from a single grain of stardust to the entire observable universe.

Drag two alike together and watch them become something greater: dust becomes pebbles, pebbles become worlds, worlds ignite into stars, stars gather into galaxies. Each step up the cosmic ladder is a small, satisfying moment of creation, set to an ambient soundscape and a quiet field of stars.

There's no pressure and no timers — just the calm rhythm of merging, the glow of each new creation, and the awe of watching a universe take shape in your hands.

FEATURES • Merge across five cosmic scales — dust, worlds, stars, galaxies, and the universe itself • Ascension moments: the objects you built snap into orbit around each new creation • Big Bang prestige: complete the universe and begin again with permanent boosts • A Codex of real astronomy — tap any object to learn the science behind it • Your Cosmos: a permanent trophy gallery of everything you've built • Idle progress: the Cosmic Forge keeps working while you're away • Meaningful upgrades — never pay-to-win • Calm by design: colorblind-safe tokens, reduce-motion support, independent sound and music controls

Optional rewarded boosts and a one-time Remove Ads — no forced interstitials, no energy timers, no walls. From dust to the cosmos, one merge at a time.