Graveyard Keeper Resolution Ultrawide Patcher

A patcher for Graveyard Keeper.
Removes the built in 2560x1440 cap so the game uses the monitor's real native resolution.

Drop the exe into the game folder and run it once.
The game launches borderless at the native resolution with a hardware cursor.

Why

Out of the box the game rejects anything wider than 2560 or taller than 1440. On a 5120x1440 monitor that leaves half the screen unused or the game letterboxed.
Unity also filters its own resolution list and sometimes drops the native mode, so even after the cap is raised the Options dropdown can still be wrong.
The fog uses a fixed 6 tile wide grid which stops well short of the right edge on ultrawide aspect ratios.

The patcher fixes all of that in one pass so the game behaves the same on any monitor.

How

The patcher rewrites a handful of methods inside Assembly-CSharp.dll using Mono.Cecil, byte edits one flag inside the level2 scene file, and clears any saved Unity prefs so the new defaults actually show up.

On the first run it makes Assembly-CSharp.dll.bak-original and level2.bak-original. Every run after that reads from the backups, so patching twice is safe.

Resolution cap

Inside ResolutionConfig.GetResolutionConfigOrNull the hardcoded 2560 and 1440 become 16384 and 8192. IsHardwareSupported is replaced with a method that returns true, so Unity hidden modes go through.

Native resolution fallback

GameSettings.ApplyScreenMode hardcodes a 1920x1080 fallback when no resolution is saved. The patch swaps both constants for Screen.currentResolution.width and .height at runtime.

Resolution list

At the end of ResolutionConfig.InitResolutions the patch injects a loop that adds Screen.currentResolution to _available_resolutions when it isn't already in the list. That puts the native mode in the Options dropdown.

Fog

FogObject.InitFog, Update, and the constructor size the fog grid with the numbers 6 and 36. The patch replaces them with Max(6, ceil(Screen.width / 576) + 2) so the grid grows with the window.

Cursor and borderless

Both GameSettings..ctor and PlatformSpecific.LoadGameSettings write cursor_mode = 2 (Software). The patch swaps those for 1 (Hardware). Borderless is already the zero default so nothing else needs to change.

Main menu debug label

The level2 file contains a UILabel named small_font that renders debug text visible at ultrawide aspect ratios. The patch searches for a 24 byte pattern that identifies that label and flips one byte of m_Enabled from 01 to 00.

Install

The patcher runs on Windows, Linux, and macOS across Steam and GOG builds. Linux and macOS need Mono installed.

Automatic

Drop patch.exe inside the Graveyard Keeper install folder and run it.

On Windows, double click patch.exe or run it from a terminal.

On Linux, run it with Mono.

mono patch.exe

On macOS, same as Linux once Mono is installed with brew install mono.

mono patch.exe

Manual

Keep patch.exe anywhere and pass the install path as the first argument:

mono patch.exe "~/.local/share/Steam/steamapps/common/Graveyard Keeper"

On Windows:

patch.exe "C:\Program Files (x86)\Steam\steamapps\common\Graveyard Keeper"

On macOS point at the folder holding the .app:

mono patch.exe "/Applications/Graveyard Keeper.app"

To undo, copy the .bak-original files back over the patched ones, or verify integrity of game files in Steam.

Building

Mono.Cecil.dll is embedded into the exe as a resource so the output stays self contained.

mcs -langversion:7 \
    -r:/usr/lib/mono/gac/Mono.Cecil/0.11.1.0__0738eb9f132ed756/Mono.Cecil.dll \
    -resource:/usr/lib/mono/gac/Mono.Cecil/0.11.1.0__0738eb9f132ed756/Mono.Cecil.dll,Mono.Cecil.dll \
    patch.cs