Sum Chain - Free Online Number Puzzle Game

How to play Sum Chain

1. Drag across numbers that touch each other, diagonals included.
2. Release when the chain adds up exactly to the target.
3. A chain must use at least two numbers.
4. Drag back onto the previous number to undo a step.
5. Every clear adds seconds to the clock, so keep chaining.

Game features

• Quick two minute rounds
• Chain and combo scoring
• Targets that grow as your score does
• Touch and mouse controls
• Best score saved in your browser
• No download required

Tips for Sum Chain

• Long chains of small numbers beat short chains of big ones.
• Clear without missing to keep the combo multiplier climbing.
• If you overshoot the target, drag back a step instead of starting over.

Frequently asked questions

What is Sum Chain?

Sum Chain is a fast number puzzle. Drag across numbers that touch each other, in any direction including diagonals, and release when the chain adds up exactly to the target. Longer chains score more, clearing in a row builds a combo, and every clear buys you a few more seconds.

Is Sum Chain free to play?

Yes. Sum Chain is completely free to play on Apio Games, directly in your browser. No payment, subscription, or download required.

Can I play Sum Chain on mobile?

Yes. Sum Chain works on mobile and desktop browsers with touch-friendly controls, so you can play on your phone or tablet without installing an app.

Do I need an account to play Sum Chain?

No. You can play Sum Chain on Apio Games without creating an account or sharing any personal information.

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