JavaScript code challenges fall from the top of the screen. Type the missing JavaScript syntax before they reach the bottom to destroy them and survive!

Auto-Targeting: The game automatically targets the challenge closest to the bottom. A pink laser pointer shows which one you're solving.

Type the Answer: Look at the challenge and type only the missing JavaScript code (the __ blank). Your input appears at the bottom of the screen.

Flexible Answers: For most challenges, any valid JavaScript value works! Type any integer, any valid identifier, any operator, etc.

Combos: Solve challenges in a row without mistakes to build combos. Higher combos = more points!

SPM: Solutions Per Minute measures your solving speed.

Powerups: Destroyed challenges may drop powerups like Shield, Slow Time, 2x Score, Bomb, Heal, and Freeze.

Every 5 waves, a boss challenge appears with 3 HP. You must solve it three times to destroy it. Each correct answer deals 1 damage.

Easy: Variables, types, console, functions like let, const, console.log

Normal: Arrow functions, arrays, objects, template literals like =>, map, ${}

Hard: Promises, async/await, classes, modules like async, class, import

Insane: Generators, proxies, symbols, modern JS like Proxy, Symbol, ??

• Type faster to build higher combos

• Focus on the challenge closest to the bottom (auto-targeted)

• Use powerups strategically to survive longer

• Any valid JavaScript syntax works — be creative!

• Pink laser shows which challenge you're solving

• Backspace clears your current input