Orrin's Chessboard

Orrin's Chessboard is a tower defense game in which you gather resources, build and upgrade towers, and protect a small castle from waves of monsters. The board expands and its tiles change each round, while every building you place reshapes the enemies’ route.

Shape the board

Natural terrain influences board generation, and special tiles create additional tactical choices. Portals instantly teleport monsters, while Enemy Altars heal them. You can use the terrain and your building placement to redirect enemies and strengthen your defenses.

Each round, you can buy cards from a shop, adding controlled randomness to your choices. With limited information, you observe the board and decide how to shape the battlefield.

Gather and build

You collect materials from resource tiles to construct and upgrade towers; purchasing cards requires gold. Towers have different resource requirements and multiple upgrade paths, with types ranging from the Archer Tower to the Crystal Tower. The game features a variety of monsters, from easier enemies to more challenging ones.

Roguelike progression

As you progress, you choose one of three roguelike upgrades. More than 100 three-choice upgrades offer different strategic possibilities across your runs.

Themes and levels

The game includes four themes, each with its own visual style and board-generation pattern:

• Classic Forest
• Autumn
• Desert
• Ice & Snow

There are more than 20 levels and many chapters, with stars to earn by clearing levels on the hardest difficulty. The changing boards and upgrade choices create near-infinite run possibilities, and the game offers more than 20 hours of gameplay.