Aloka Technology
Code Games

Train your development brain.

Three browser mini-games built for developers. Solve coding puzzles, unlock harder stages, and climb the global leaderboard.

Score 1×

Code-Doku

Coding Sudoku

Fill a grid with HTML tags or JavaScript keywords so each symbol appears exactly once per row, column, and box. Same rules as Sudoku — but with code. Grid grows from 3×3 to 8×8 across 100 stages.

100 Stages · Progressive difficulty

How to play ▾
  1. Pick a theme: HTML tags or JS keywords.
  2. Click any empty cell to reveal the symbol picker.
  3. Each symbol must appear once per row, column, and box (where applicable).
  4. Red cells indicate conflicts — resolve them all to win.
  5. Grid grows from 3×3 (stages 1–20) to 8×8 (stages 91–100).
Play Now →
Score 2×

Bitwise Matrix

Binary Logic Puzzle

Fill a grid with 0s and 1s. No three of the same digit in a row. Equal counts per row and column. No two identical rows or columns. A binary spin on the classic Binairo puzzle.

100 Stages · Progressive difficulty

How to play ▾
  1. Click an empty cell to cycle: empty → 0 → 1 → empty.
  2. No three consecutive identical digits (no 000 or 111).
  3. Each row and column must have equal 0s and 1s.
  4. No two rows and no two columns may be identical.
  5. Grid grows from 4×4 (stages 1–20) to 12×12 (stages 81–100).
Play Now →
Score 3×

Dependency Logic

Code Order Puzzle

Shuffle lines of real JavaScript/TypeScript code back into correct execution order. Understand variable hoisting, closures, and import dependencies to solve each puzzle.

100 Stages · Progressive difficulty

How to play ▾
  1. Read the shuffled lines of code.
  2. Drag lines or use the arrow buttons to reorder them.
  3. Press Check Answer — wrong positions are highlighted red.
  4. Use Hint (+30s penalty) to lock one correct line in place.
  5. Harder puzzles involve closures, async/await, and module imports.
Play Now →

Scoring

Score = (600 − seconds) × stage × game_multiplier × difficulty_multiplier

Difficulty (by stage position)

  • Easy — Positions 1–3 in each band (×1.0)
  • Medium — Positions 4–7 (×1.1)
  • Hard — Positions 8–10 (×1.2)

Game Multiplier

  • Code-Doku — ×1
  • Bitwise Matrix — ×2
  • Dependency Logic — ×3

Tips

  • Solve faster → higher score.
  • Higher stages multiply your score.
  • Hint penalties add to your time.
↑Zalo