Number Sums

Number Sums - Play Online

Math puzzle meets grid logic. Number Sums is a brain-teaser where you tap numbers to hit exact totals. Two modes. Endless challenge. Simple rules, deep strategy.

How to Play Number Sums

The Goal: Match every row and column to its target sum. Tap the right numbers. Clear the grid. That's it.

Select the Numbers

Look at the sums on the left and top. Tap numbers on the grid using ✏️ Select mode. Your picks must add up exactly. No more, no less. When you nail a row or column, unused numbers vanish automatically. Satisfying.

Two Game Modes

Normal Mode: Focus on rows and columns. Match the target sums shown at the edges. Clear the 4x4 or 4x5 grid. Region Mode: Harder. Colored regions appear. Each one has its own target sum marked in red. Solve rows, columns, AND regions simultaneously. More brainpower required.

Use Remove Mode

Switch to 🗑️ Remove mode. Cross out numbers you know don't fit. Eliminates clutter. Speeds up solving. Pro tip: Start with the smallest or largest sums. Fewer number combinations to test.

Watch Your Lives

Heart-based life system. Make mistakes? Lose a heart. Run out? Game over. Plan before you tap. Double-check your math.

Key Features

• Two Distinct Modes: Normal for pure row/column logic. Region for multi-layer sum challenges.
• Minimalist Vector Graphics: Clean 2D grid. No distractions. Runs lag-free on any browser.
• Auto-Clear Mechanic: Solve a line correctly. Watch the wrong numbers disappear. Instant feedback.
• Lives System: Heart counter adds pressure. Forces smart play.
• Scalable Difficulty: Grids range from 4x4 to 4x5. Later puzzles stack multiple colored regions.

Who is Number Sums for?

Perfect for Sudoku and Kakuro fans. Great for 2-5 minute brain breaks. Adults and seniors love it. Casual puzzle gamers need this.

Release Date & Developer

Number Sums was developed by sublevelgames. Released on March 3, 2026.

Controls

• Mouse Click / Tap: Select or remove numbers on the grid
• ✏️ Button: Switch to Select mode
• 🗑️ Button: Switch to Remove mode
• Back Button: Return to level select