I Built 7 Idle Games in 30 Days: What I Learned About Incremental Design

AI Disclosure: This article was written with AI assistance. All games mentioned were built using AI-assisted development tools. The Idle Game Rabbit Hole It started with one question: how small can an idle game be and still feel complete? A few weeks later, I had shipped 7 idle/incremental browser games — each under 30 KB of vanilla JavaScript, zero dependencies, zero install. Along the way I learned that incremental game design is deceptively deep, and that the genre's "just a clicker" reputation hides some of the tightest design loops in gaming. This article breaks down what I learned about the craft — the loops, the prestige systems, the offline math, and why 5-minute sessions beat 50-hour grinds. The Core Loop: Click → Earn → Upgrade → Repeat Every idle game boils down to one loop. The art is in how you dress it up. function gameLoop(dt) { resources += rate * dt; rate = baseRate * upgradeMultiplier; if (resources >= nextUpgradeCost