Hollow Knight
21:9
Native
32:9
Partial
Gameplay Scaling
Hor+
HUD
Edge-positioned
Centered HUD
Unavailable
Cutscenes
16:9 pillarboxed
Menus
16:9
FOV
Correct
Black Bars
Cutscenes only
Flawless Widescreen
Not Supported
Community Fix
Available
Online Safety
Unknown
Overview
PCGamingWiki says 21:9 support was added natively in update v1.5.12459, and links p1xel8ted's fix for FOV adjustment, wider resolution lists and expanded menu backgrounds, which its author says was tested at 21:9, 32:9 and 48:9. Native 32:9 behavior and cutscene/menu pillarboxing could not be confirmed directly, so 32:9 is rated partial and menus conservatively 16:9. The Microsoft Store version reportedly needs a manual hex edit instead.
Compatibility details
21:9 SupportNative
32:9 SupportPartial
Gameplay ScalingHor+
HUD BehaviorEdge-positioned
Centered HUDUnavailable
Cutscene Support16:9 pillarboxed
Menu Support16:9
FOVCorrect
Black BarsCutscenes only
StretchingNone observed
Fixes
Recommended fix
UltrawideFixes - Hollow Knight (p1xel8ted)
UltraWideCheck links to third-party mods and tools but does not host or distribute mod files.
Patch history & verification
Current Steam build (fix v0.1.2)Sep 20, 2026
Checked PCGamingWiki Video section (21:9 native since v1.5.12459), GitHub release metadata (v0.1.2 dated 2026-03-08), Steam appdetails, Flawless Widescreen repo (no Hollow Knight module). Lower confidence: 32:9 native behavior, cutscene bars and menu ratio.