Sudoku Siege

Sudoku reimagined as a tower climb on a life bar — solve a stack of grids floor by floor, and every misplaced digit chips away at your HP.

How to play

Each floor is a sudoku grid: fill every row, column and 3x3 box with the digits 1 to 9, no repeats. The siege twist is a shared life bar — placing a digit that breaks the rules costs you HP. Clear a grid to ascend to the next floor, and push as high up the tower as your logic (and your health) will carry you.

• Fill the grid so each row, column and box contains 1 to 9 once.
• Wrong placements drain your HP, so deduce before you commit.
• Solve a floor to climb to the next, tougher grid.

Game modes

• Daily — a shared tower seeded the same for everyone each day.
• Practice — endless seeded climbs at your own pace.

Controls

• Desktop: click a cell and type a number, or use the on-screen number pad.
• Phone & tablet: tap a cell then tap a number — fully touch playable.

Tips & strategy

• Only place digits you've fully deduced — a guess that fails costs real HP here.
• Use pencil-mark reasoning mentally on cells with two candidates before deciding.
• Scan for forced singles each floor; they're free, safe progress that protects your life bar.

About Sudoku Siege

Sudoku Siege is an original free browser game that turns the classic public-domain number-placement puzzle into a survival tower climb, where a life bar rewards careful logic over guesswork.

A free, original browser game on PlayPendium — no download, no install. Browse all games →