TabSpawn
Cosmojar: a glass jar on a starry night sky half full of smiling planets, Jupiter and Saturn at the bottom, Earth, Mars and moons stacked above, a comet waiting to dropInstant play

Grow a Sun in a jar.

Cosmojar

A Suika-style drop and merge game with planets. Drop dust into a jar, bump matching bodies to merge them up to a Sun, chase combos and the Top 10.

Players
1 player
Input
Mouse, Touch, Keyboard
Runs on
Any modern browser on desktop, Chromebook or phone (portrait works well)
Access
Open and play
PuzzleArcadeSuika styleMergePhysicsCombos11 bodiesOne tapTouch friendlyOriginal

About Cosmojar

Cosmojar is a free Suika-style merge game for the browser, the drop-and-merge formula of the watermelon game with planets instead of fruit. A piece of space dust hangs over a glass jar; move it left and right and tap to drop. When two bodies of the same kind touch, they merge into the next one up: dust becomes a pebble, pebble a comet, then the Moon, Mars, Venus, Earth, Neptune, Saturn, Jupiter and finally a Sun. Two Suns together go supernova and clear space around them.

The physics is the game. Bodies roll, settle, wobble and squeeze into gaps, so a merge deep in the pile can set off a chain of merges above it. Quick chains build a combo that multiplies the points, and bigger merges are worth more. The jar is lost when a body comes to rest above the dotted line, so the trick is to keep the big planets low and the small ones on top, and to leave yourself a lane.

There are eleven bodies with faces, a next-piece preview, a drop guide, and a best score saved in your browser. Your score goes to the public Top 10 under your TabSpawn player name. It is an original TabSpawn game drawn on a canvas with a starfield behind the jar and synthesised sound, and it works with a finger on a phone or a mouse on a laptop or Chromebook.

How to play

  1. Move the piece over the jar with your finger or mouse, or with the left and right arrow keys.
  2. Tap, click or press Space to drop it. The next piece is shown at the top.
  3. Two of the same body merge when they touch. Aim small bodies at their twins and let the pile do the rest.
  4. Keep the big ones low. A body that rests above the dotted line for more than a moment ends the game.
  5. Chain merges quickly for a combo bonus. Two Suns make a supernova worth 250.

Controls

Move / dragAim
Tap / click / SpaceDrop
Left RightNudge the aim
RRestart
PPause
MSound on or off

Tips

  • Drop the small stuff on the small side and the big stuff on the other; a sorted jar merges itself.
  • A Saturn or Jupiter wedged in the middle blocks everything. Roll them to a wall by dropping on their shoulder.
  • Do not rush: the piece only drops where you let go, and the pile keeps moving for a second after each merge.

Embed Cosmojar on your site

Free for blogs, school pages and forums. Paste this once and Cosmojar plays inside your page; players who click the TabSpawn logo land here.

<iframe src="https://tabspawn.com/play/cosmojar/" title="Cosmojar on TabSpawn" width="100%" height="640" style="border:0;border-radius:12px;max-width:100%" allow="fullscreen; gamepad; autoplay" loading="lazy"></iframe>