The Strategy of Upgrades, the Thrill of Defense
Your choices—and your luck—will decide the battle.

[ Game Overview ]

“Checkmate Defense” is a strategic auto-battle tower defense game.

Summon and merge turrets from 1★ to 6★ to stop relentless enemy waves.

During combat, every decision—merging, selling, positioning, and upgrading—becomes a decisive move that reshapes the battlefield.

• Player Movement

  Move using WASD or the Arrow Keys (↑ ← ↓ →).

• Turret Summoning

  Press Q to summon a turret.

  ※ Higher-rarity turrets have increased summon chances based on the player’s Luck.

• Turret Merging

  Press E to merge turrets.

  ※ 1★–5★ Turrets: Merge two identical turrets to obtain a random turret of the next tier.

  ※ 6★ Turrets: Spend 200 coins and select two 5★ turrets from the recipe to summon a 6★ turret.

• Turret Selling

  Press R to sell a turret.

  ※ 6★ turrets cannot be sold.

• Turret Placement

  Press Z to pick up a turret, and X to place it.

• Mines

  Approach a mine and press the number keys (1–5) to assign a turret to it.

• In-Game Upgrades

  Obtain higher-rarity upgrades based on the player’s Luck during a run.

• Lobby Upgrades

  Earn resources by clearing Boss Waves and unlock various upgrades in the Lobby.

• Collection

  Turrets discovered through summoning and merging are unlocked in the Collection, where you can view their details.

  On a battlefield of chaos where Solterian, Nethral, Elynsha, and Fenrok—four races—fight together,
  the player stands as the King, commanding the final line of defense.

  Now, prove your choices and your luck in Checkmate Defense.