Drag, swap and fuse. Complete the space pictures.
Cosmo Puzzle is a cheerful jigsaw puzzle game with a toy space theme and an astronaut cat, for phones, tablets and computers. Every level is a colorful space picture cut into square pieces: drag one piece onto another to swap them, and pieces that end up next to their true neighbours fuse with a line of light and move as one group. You get a finished game with 50 levels, a chapter map, saved progress, music and sound effects, plus the complete source code to change the pictures, translate and publish as your own.
Drag, swap and fuse
Drop a piece on another and the two change places. When a piece lands next to the right neighbour, both fuse into a group that moves together, so the picture comes back piece by piece. Every level has a par, the fewest moves: finish at or under par for 3 stars and an extra hint. Captions on the first three levels teach the rules in one line each.
50 levels in 5 chapters
Moon Base, Red Planet, Asteroid Belt, Alien World and Star Station, 10 space pictures each, with grids that grow from 2×2 to 6×6 and bigger pictures on the 5th and 10th level of every chapter. The level map has one page per chapter, with arrows and side swipe; locked chapters can be viewed before they open. On the home screen the chapter scene gains color with each finished level, and a row of small planets lights one planet per level.
Hints and Peek
The player starts with 3 hints, and every 3-star picture gives one more. A hint makes one correct move. Holding the Peek button shows the whole finished picture on the board. On phones and computers, upright or sideways: turning the device during a level rearranges the grid and keeps the moves already made.
One picture = one level
Levels come from a simple list of pictures in assets/levels.json. Add your own photos or drawings, create new chapters, give each chapter its own home scene and map background and reorder levels without writing code. Any picture size works: the game crops the centre to each grid.
14 languages
The interface comes in English, Portuguese, Spanish, French, German, Italian, Dutch, Polish, Turkish, Russian, Indonesian, Japanese, Korean and Simplified Chinese. The language follows the browser and can be changed in Settings, next to the music and effects volume, vibration, reduced motion and full screen.
Yours to customise
Plain HTML, CSS and JavaScript modules with no dependencies: upload the game folder to any static host and it runs. The full editable source comes with tests, a build script, a local server script, an illustrated guide in 14 languages and a step-by-step customisation guide. No ads, no purchases, no accounts and no server.
