UltraWideCheck
Core Keeper cover art

Core Keeper

Pugstorm·Fireshine Games·2024
Partial
21:9
Fix Required
32:9
Fix Required
Gameplay Scaling
Fixed FOV crop
HUD
Centered
Centered HUD
Unavailable
Cutscenes
Ultrawide
Menus
Ultrawide
FOV
Narrow
Black Bars
Full-time
Flawless Widescreen
Not Required
Community Fix
Available
Online Safety
Unknown

Overview

PCGamingWiki lists Core Keeper's ultrawide support as hackable: it needs a mod, and the resolution cannot be set manually. The UltraWide mod on mod.io adds ultrawide support.

Compatibility details

21:9 SupportFix Required
32:9 SupportFix Required
Gameplay ScalingFixed FOV crop
HUD BehaviorCentered
Centered HUDUnavailable
Cutscene SupportUltrawide
Menu SupportUltrawide
FOVNarrow
Black BarsFull-time
StretchingNone observed

Fixes

Recommended fix
UltraWide for Core Keeper (Sashiri)
Mod
Version Latest on mod.io (not confirmed)Compatible with Current Steam build (not confirmed)Source: mod.io
View Fix Installation Instructions

UltraWideCheck links to third-party mods and tools but does not host or distribute mod files.

Patch history & verification

Current Steam build (number not confirmed)Sep 28, 2026
PCGamingWiki: ultrawidescreen=hackable using the Sashiri mod on mod.io (mod page title confirmed). No Flawless Widescreen module. LOW confidence on the exact base-game behaviour (assumed pillarboxed). The mod version is not confirmed.