Skip to content
KR6 Guide
Home
Planners
Heroes
All 12 heroesHero stats comparedGeraldZefiraBolinConnorMalikRhodesGeminaIgnusIllianaOniDrakkanAshbite
Towers
All 15 towersTower stats comparedGold: is the Prospector worth it?Archer GarrisonKnights OrderRoyal CatapultScholar MageDwarven CulverinElven Elite RangerWildcat HuntressesGold ProspectorsSunray MasterCursed CrossbowsAlchemist ShackIronbark TreantLight PriestessArcane ForgerSentry Watchtower
Spells
Campaign
All 18 stagesBossesEnemiesHardest enemiesModes and difficultyImpossible difficultyStars and unlocksClassic RushAchievementsAchievement mapCompletion tracker
Platforms
The game
SourcesAbout this site

Kingdom Rush 6 crashing on PC

The Steam engine update is in the main version, 1.00.072. If crashes began after that update, try the prev_version branch to test the previous version. Back up your save before you start, and send Ironhide the details if the crash persists.

  1. If crashes began after the update, try prev_version

    The prev_version branch returns to 1.00.052. Use it to test a crash that started after the engine update; an older version may not help a crash you already had. In your Steam library:

    1. Right-click the game and choose Properties.
    2. Open Game Versions & Betas.
    3. Pick prev_version, close the window, and let Steam download that version.
    4. Launch the game.

    To go back later, pick None in the same list.

  2. Send the crash report

    When the game crashes to a blue screen, it writes a file named crash_DATE_TIME.txt into the same folder as your saves (below). Email it, one file per crash if there are several, to support@ironhidegames.com with your operating system and what you were doing when it closed: which stage or screen, and whether it happens every time. If it simply drops to the desktop with no crash screen, send the same details without the file.

Where your saves are, and how to back them up

Saves are files named slot_1.lua, slot_2.lua and so on, one per save slot, in the game’s folder. Copy them somewhere safe before switching branches or deleting settings; copying them back restores the slot.

SystemFolder
WindowsC:\Users\<your user name>\AppData\Roaming\kingdom_rush_genesis
Mac (Steam)~/Library/Application Support/kingdom_rush_genesis

On Steam the saves are also kept in Steam Cloud, so a new PC or Mac picks them up when you sign in. The same folder holds settings.lua and global.lua, the two files to delete when the game opens at the wrong resolution.

The mouse cursor disappears

Usually on a second monitor, or once you start streaming or sharing your screen. Ironhide’s fixes, in the order to try them:

  1. In Options (top left of the main menu), set the quality to Full HD.
  2. Hold Alt while the game starts and pick your monitor’s native resolution.
  3. Switch the display mode from fullscreen to borderless or windowed, then restart the game.
  4. With two monitors, give both the same scaling in Windows (Settings, System, Display, Scale), or play on the main one.
  5. Streaming: start the game first, then the stream, and Alt+Tab out and back if the cursor has already gone. In OBS use Window or Display Capture instead of Game Capture; in Discord share the whole screen rather than the game window.
  6. Turn off overlays (Discord, NVIDIA, Xbox Game Bar, Steam) and update your graphics driver.

Not a crash, but close

  • Everything moves in slow motion. Options, page 5: set FPS to 30 or turn off VSYNC. A monitor running at 30 Hz causes it too.
  • Steam says the executable is missing, or asks for a CD key. Restart the Steam client.
  • Stage 13 never ends after the boss dies. A reported bug: the boss falls, no victory screen appears, and the game may then close. Ironhide is looking into it; send the crash file as above if you hit it.
  • The screen resolution is wrong. Hold left Alt (Option on Mac) while the splash screen plays to open the resolution window.

Patch1 is a separate balance and bug-fix preview; it is not the name of this engine update. The rest of the launch problems and their answers are in the FAQ; new patches show up on patches and news.

Next in the codex