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Reflex Machine

By @arnost

  • 1 Devlogs
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A fast-paced, browser-based reaction game inspired by the classic "Bop-It" toy. The screen rapidly flashes a random instruction (e.g., "Click", "Double Click", "Press Spacebar", "Press Enter"), and the player has exactly two seconds to perform the correct action before the timer runs out.

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@arnost on Reflex Machine

22m 59s logged

Why use state machines for a reaction game?

Finite State Machines (FSM) model apps as explicit, predictable states (Idle -> Playing -> GameOver) triggered by events. No more boolean state spaghetti….

We chose XState for Reflex Machine to get:

  • ⏱️ Declarative game timers (delays as state transitions)
  • 🔒 Input integrity (clicks ignored if round is over)
  • ❌ Zero impossible states
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