Slide the blocks, make 10 and launch the capsules.
Cosmo Ten is a cheerful number puzzle game with a toy space theme and Nova, a little fox astronaut, for phones, tablets and computers. Numbered crystal blocks sit on a space-station board: push one into another and, if the two add up to 10, they become a capsule with the color of the block you dragged. Every capsule has to leave through the portal of its own color. You get a finished game with 50 levels, a world map, saved progress, music and sound effects, plus the complete source code to change the levels, translate and publish as your own.
Drag, make 10, launch
Blocks slide cell by cell and stop at walls and other blocks. Two blocks that add up to 10 become a capsule; smaller sums join into one block, so a 2 and a 3 can become a 5 for another 5; more than 10 does not fit. Every drag is a move: clear the board with moves to spare for 3 stars.
50 levels in 5 worlds
Moon Base, Asteroid Belt, Ice Planet, Crystal Nebula and Star Station, 10 handmade levels each, every one checked by the solver built into the game. The world map shows a trail of level pads with their stars, a chest at the end of each world and the gate to the next one. Level 10 of every world is a challenge with a clock.
New twists in every world
Locked portals open after other capsules leave, asteroids crack with every launch, meteors block the way, crystal blocks cannot move and surprise boxes reveal a number. A card explains each one the first time it appears. Four power-ups help: Undo (3 free on every level), Brush, Shovel and Extra moves.
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 vibration and less motion; the music button sets the music and effects volume.
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 that solve every level, a level generator, a build script, a local server script, an illustrated guide in 14 languages and a step-by-step customisation guide. No build step: edit a file, reload the page and see the change.
