Web Development
Flip Coins: Idle Game
A dependency-free browser game with animated coin flips, an upgrade shop, a 97-node skill tree and ascensions.
- Type
- Personal project
- Role
- Designer and developer
- Period
- Sept 2026 to Oct 2026
- Status
- Live
~3 h
to reach infinity by design
97
skill-tree nodes
33
end-to-end checks passing
The idea
Idle games break when the numbers are not balanced: they either end in minutes or stall forever.
What I built
A headless simulator plays the whole game and prints a pacing table, which was used to tune costs and income until the full run takes about three hours with nine ascensions. The interface is plain ES modules with canvas-free CSS animation, served by Nginx in a small Docker image.
The result
A game that completes in the intended time, with 33 automated end-to-end checks passing on the live site.
Key features
- Animated flip with hand and coin physics
- Upgrade shop and skill tree
- Ascension system
- Progress saved in the browser
Screens
Game screen1 / 1
Stack and tools
- JavaScript
- HTML5
- CSS
- Docker
- Nginx
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