Games like Annwn: the Otherworld
Games like Annwn: the Otherworld include Party Hard, Shadow Tactics: Blades of the Shogun, Baldi's Basics Plus, UFO 50, and Gunpoint. We matched them by the tags players give Annwn: the Otherworld on Steam (Indie, Strategy, Retro, and Stealth): closest matches first, and among equally close ones the better-known games.

Party Hard
Shared: Strategy · Stealth · Indie

Shadow Tactics: Blades of the Shogun
Shared: Strategy · Stealth · Indie

Baldi's Basics Plus
Shared: Stealth · Indie · Retro

UFO 50
Shared: Indie · Retro · Strategy

Gunpoint
Shared: Indie · Stealth · Strategy

The WereCleaner
Shared: Stealth · Strategy · Retro

Heat Signature
Shared: Indie · Stealth · Strategy

Organ Trail: Director's Cut
Shared: Indie · Retro · Strategy

Monaco: What's Yours Is Mine
Shared: Indie · Stealth · Strategy

Plague Inc: Evolved
Shared: Strategy · Indie

Papers, Please
Shared: Indie · Retro · Strategy

Sneak Thief
Shared: Strategy · Indie · Stealth

Nubby's Number Factory
Shared: Strategy · Indie · Retro

Party Hard 2
Shared: Indie · Strategy · Stealth

FTL: Faster Than Light
Shared: Strategy · Indie

Game Dev Tycoon
Shared: Indie · Strategy

Ninja Stealth
Shared: Strategy · Indie · Stealth

Satellite Reign
Shared: Strategy · Indie · Stealth

Slots & Daggers
Shared: Strategy · Retro · Indie

The Escapists 2
Shared: Strategy · Indie · Stealth

Into the Breach
Shared: Strategy · Indie

Town of Salem
Shared: Strategy · Indie

Ninja Stealth 2
Shared: Strategy · Indie · Stealth

Desperados III
Shared: Strategy · Stealth · Indie