Dead Island 2 has native ultrawide support for gameplay. Here's a fix to get ultrawide support for the cutscenes too, thanks to Lyall. : r/widescreengamingforum

Dead Island 2 PC [8K 32:9 Super Ultrawide + HDR w/ Benchmark Overlay]

I Said Sideways!! Let's Play Dead Island 2, Ep. 29

Dead Island 2 - Ultrawide 21:9 Gameplay

Dead Island 2 Haus DLC 2-Player Co-Op Ultrawide PC Gameplay [3440 x 1440] - No Commentary

Dead Island 2, PC Max Settings 3440x1440 21:9, RTX 4090, Widescreen Gameplay

Dead Island 2 UltraWide 21:9 wallpapers or desktop backgrounds

On ultrawide 21:9 monitors, the 21:9 cutscenes just sit in the middle of the screen : r/reddeadredemption2

Dead Island 21:9 Review

Dead Island 2 First 60 Minutes PC Ultrawide Gameplay [3440 x 1440] - No Commentary

Dead Island 2 4080 GeForce NOW Ultimate Ultrawide Performance & Gameplay

Dead Island 2 First 60 Minutes PC Ultrawide Gameplay [3440 x 1440] - No Commentary

Dead Island 2 (Yager alpha) - 5120 x 1440 - Ultra Wide Gaming - 32:9

Widescreen menu and hud fix (Eyefinity/Surround) :: Dead Island Riptide General Discussions

Support for 21:9 Super Widescreen Monitors? :: Dead Island Definitive Edition General Discussions