Free · Instant play · No download
Drop Planets: a free online merge puzzle about stacking a whole galaxy
Drop Planets takes the familiar drop-and-merge formula and sets it inside a shrinking galaxy: aim a falling planet, let it go, and watch two matching planets fuse into the next size up the moment they touch. Miss the timing and the pile creeps toward a danger line running across the top of the board — cross it and the run ends. The skill is less about speed and more about reading exactly where each drop will land before you commit.
Quick facts
- Genre: puzzle · merge · drop-and-stack
- Mode: single-player, one endless run at a time
- Platform: loads in desktop and mobile web browsers
- Price: free to play, nothing to sign up for
- Controls: arrow keys and space on desktop, hold-and-release on touch
How to play Drop Planets
Every round of Drop Planets comes down to the same choice: where to send the next planet. Matching planets fuse into a bigger one on contact, and each fusion buys you room before the pile reaches the danger line at the top of the board.
- 1
Line up the drop
Move the falling planet left or right along the rim before you commit to a spot.
- 2
Release it
Let go and watch it fall — a planet only merges when it lands touching a match.
- 3
Chase the fusions
Aim later drops near planets of the same size so contact turns two into one bigger planet.
- 4
Watch the danger line
Keep the stack low; once a planet settles above the line, the run ends.
Controls
Desktop
- Arrow keys move the falling planet left or right
- Space bar releases the planet you're holding
- R restarts the current run
- P pauses and resumes the game
Phone & tablet
- Hold and slide a finger to line up the drop
- Lift your finger to release the planet
- The portrait board is sized for one-thumb play on a phone screen
Why players like Drop Planets
Physics you can read
Every planet falls at the same steady pace, so a miss comes from misjudging the drop, not bad luck.
A whole galaxy to build up
Matches climb from small rock to giant planet across many merge tiers, not just two or three sizes.
Fits a phone screen
The tall, portrait board is built for one-thumb play on a phone as much as a desktop tab.
Instant restarts
One key drops you straight back into a fresh run after a bad stack, no menu digging required.
Tips for Drop Planets
- Scan for the closest match first. Chasing a distant color across the board wastes a drop that could have merged instead.
- Leave a lane open near the middle. A single empty column gives you somewhere to redirect a bad drop.
- Don't rush every release. A slower, better-aimed drop beats a fast one that lands on the wrong side.
- Protect your biggest planets. Losing a large fused planet to a careless merge costs more progress than losing a small one.
- Use the pause key to think, not to stall forever. Planning the next few drops helps more than reacting on instinct alone.
Who is Drop Planets for?
Merge-game regulars
Already know the drop-and-fuse loop from other games and want a fresh, space-themed spin on it.
Players who like a visible failure line
Prefer a clear danger line over a vague game-over condition, so they always know how close a run is to ending.
Short-break puzzlers
Want a round that can end in two minutes or stretch to twenty, depending on how careful the drops are.
Scoring & winning
Merging two matching planets is what grows your total, and later, bigger fusions carry more weight than early small ones. Drop Planets has no fixed finish line — a run keeps going as long as the stack stays under the danger line at the top of the board. The moment a planet settles above that line, the run ends and your merged total becomes the score for that attempt.
Frequently asked questions
What is Drop Planets?+
Drop Planets is a free online merge puzzle: you drop planets into a shrinking column, matching pairs fuse into bigger ones, and the run ends if a planet settles above the danger line.
How do planets merge?+
Two planets of the same size merge into the next tier up the instant they touch, whether that happens mid-air or after they land on the pile.
What changes as my pile grows?+
The danger line stays fixed while your stack climbs toward it, and rarer, larger planets start appearing in the drop queue more often as you go.
Is there a cost to play Drop Planets?+
Drop Planets costs nothing to play: there is no signup screen, no app to install, and no level pack behind a paywall — the board loads the moment you open the page.
Can I play Drop Planets on my phone?+
Yes — the portrait layout was built with phones in mind. Hold and slide to line up a drop, then lift your finger to release it, all inside your mobile browser.
One more drop?
The board resets in a second — line up another planet and see how far the merges carry you this run.
↑ Play Drop Planets