Gigachess is a hero defense puzzler on a chess board. Command your party of Knights, Rooks & Bishops against the relentless Pawn onslaught!
All Reviews:
Positive (40) - 90% of the 40 user reviews for this game are positive.
Release Date:
Dec 15, 2015

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Recent updates View all (41)

July 27

Gigachess v1.20 Update | New Puzzle Attack Rank, Other Polish

'Albatross' rank in Puzzle Attack mode, a way to view a moved hero piece's previous position in a turn and more advance Gigachess ahead :)

  • The new rank of 'Albatross' is available in Puzzle Attack mode for any stage completed 3 turns under par
  • Right-clicking on a moved hero piece now displays a graphic on the square where the hero piece originated from in that turn
  • A highlight effect now appears on damaged Blockades when the Blockade grid is up to better indicate that they can be repaired
  • When Pawn attack ranges are set to visible, the effect now features a cycling pulse to make dangerous squares more apparent
  • The animation speed of the Hyper pulse effect has been slowed down a touch and the animation speed of the Queen-up pulse now matches that of the Hyper pulse
  • The Par value for Puzzle Attack stage 36 is now 6 (down from 8)
  • A bug where turn counting in Endless mode's performance grading could get thrown off when playing with the Spawncycle mutator enabled fixed
  • The order of the final two Tutorial stages have been flipped, so now the Curse stage precedes the Shieldguard stage (and the Shieldguard stage features a Cursed Pawn to test Curse removal via a Shieldguard with)
  • A bug where a couple of squares in the middle of the board could flash with an All-Clear fixed
  • A bug where the Viper Pawn downgrade flash effect wouldn't appear upon party demise fixed
Added later via quiet patch (Aug 3, 2018 @ 9:02am)
  • The flash animation of the turn advance button after waiting in a turn is now disabled in all game modes
  • A few sprite layering bugs corrected where effects could be drawn below the turn advance button
  • A bug in Tutorial mode where the Viper Pawn downgrade effect would play over certain Pawns at the very start of a stage fixed
As always, your bug reports and feedback on the community forums are a huge help! Thanks a bunch for playing Gigachess, please do share whatever's on your mind <3
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June 25

Gigachess v1.19 Update | Easier Curse Removal, Pawn Palette Tweaks

A change to the perks received from protecting threatened pieces + revised colour coding of Pawns step Gigachess forward :)

  • A tweak to the rules governing Shieldguards makes it easier to clear Curses from the board, so now every time a Shieldguard point is earned, any Curse present on a Pawn is wiped out (this previously only happened every 3 Shieldguard points where it was paired up with the Viper Pawn downgrade)
  • The category names displayed on Endless mode's performance grading screen will now only change colour if the category's score is "good" (green) or "bad" (red)
  • A bug where a Blockade's Stock counter (accessible by right-clicking on a Blockade) would refuse to display immediately after viewing a hero piece's ID tooltip fixed
  • A bug where it was possible to blindly place Blockades and other Power-ups onto the board through the Help slides fixed
  • A bug where quickloading a saved Endless game with the Spawncycle mutator enabled could incorrectly set the Hyper threshold fixed
  • Assorted optimization tweaks have reduced CPU usage by ~10%
Added later via quiet patch (Jul 12, 2018 @ 1:04pm)
  • A bug where loading quicksaves and autosaves in Endless mode could restore incorrect SP values fixed
  • A bug where completing a stage in Puzzle Attack mode on Easy difficulty 3 below Par would display the standard 'Par' icon on the level selector fixed
  • A bug in Puzzle Attack mode where rewinding/resetting a stage and click-undoing a hero piece that had previously received a Queen-up could incorrectly reapply Queen-up status fixed
  • Some changes made to gamepad detection to expand compatibility with more models of USB gamepad
  • A bug in Puzzle Attack mode where restoring a captured hero piece through use of the Step Back / Rewind button would place it in a bugged state where click-undo on that piece could be exploited to erase Pawns from the board fixed
  • The pink and blue palettes previously used for both Pawns and Viper Pawns have been regrouped, so now Pawns are always pink and Viper Pawns are always blue
  • A bug where playing stage 47 of Puzzle Attack mode would have a greyed out Blockade icon present in the HUD despite there being no SP provided for that difficulty fixed
  • A bug in Knight's Dungeon where the tile touch overlay had stopped displaying on square 8,4 fixed
  • A bug in Knight's Dungeon where 2-Knight stages could start counting from 2 instead of 1 when viewing a Knight's move history fixed
As always, your bug reports and feedback on the community forums are a huge help! Thanks a bunch for playing Gigachess, please do share whatever's on your mind <3
0 comments Read more


“Fans of puzzle games will find themselves in puzzle gaming hog heaven.”
Nerdy Notes

“A heady rush of chess-based strategy and tactics.”
Fireside (Game Jolt)

“Gigachess is one heck of a tactics game.”
4.0/5 – Softpedia

About This Game

Gigachess is a puzzle board hero defense. With your custom party of Knights, Rooks and Bishops, defend against the relentless waves of enemy Pawns running a blitz for the board's bottom. The seemingly unbreakable formations and constant downward march of your foe transform chess from slow burn to tactical rush in this deeply addictive single-player remix of turn-based strategy's ultimate grandmaster.

How long can you survive the Pawn onslaught?


  • Endless mode with randomly generated waves and a choice of 4 difficulty levels for a perpetual Pawn menace (now with Autosaves, Hyper states & Mutators!)
  • Puzzle Attack mode offering 48 high-stakes, logic-testing stages to clear (now with Easy Mode!)
  • Knight's Dungeon mode providing a 40-stage set of knight's tour-inspired puzzles to maze through (now with a Level Editor & Steam Workshop support!)
  • Playable Tutorials & Tooltips for a crash course in the mechanical intricacies & insight on demand
  • Strategic Power-ups that block advancing Pawns, plant explosive traps & more!
  • Competitive Leaderboards to rank your best played games against the world
  • Achievements & Trading Cards for the complete Steam experience

A single-player chess variant has never been more compelling. Get your head around Gigachess today!

System Requirements

    • OS: Windows XP SP3
    • Processor: Intel Atom 1.6 GHz (or equivalent)
    • Memory: 2 GB RAM
    • DirectX: Version 8.0
    • Storage: 50 MB available space
    • Additional Notes: 100% mouse controllable

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