Sidra's fusion toy asks you to drag or flick nuclei together until you have made four helium-4 nuclei. The chain starts with two protons making deuterium, then another proton makes helium-3, and two helium-3 nuclei finish a helium-4 nucleus. Reaction labels and an energy counter show each successful collision as the core grows brighter. Slow contacts bounce apart, so speed and aim matter; reaching the target lets you keep fusing or restart.
How the creator made it
Sidra says they built the game with one prompt to Gemini 4 Hydrogen, taking 78 seconds and costing about 19 cents.
From their post on X ↗.
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The game belongs to @SidraMiconi. Preview recorded by us. Made this game? Here's how we list it.