Spark

Build a small, playable browser game inspired by "Spark" (genre not listed).
Concept: An incremental game about running an AI lab. Start with a spark and a rack of borrowed GPUs. Teach it to be helpful. It.
Tech: use Three.js for 3D; keep it to a single page that loads instantly with no login or install.
Controls: keyboard and mouse on desktop, shown on a short how-to-play screen.
Players: single-player.
Core loop: include a visible score, a timer or round clock, levels, stages or waves that ramp up, an optional local high-score table, progress saved in localStorage.
Audio: add simple sound effects and music (start audio on the first click/tap).
Steps: 1) get the core mechanic playable with placeholder shapes, 2) add win/lose conditions and restart, 3) polish feel, visuals and sound, 4) add your own twist (setting, character or one new rule).
Make it your own: don't copy the original's name, art, text or code.