Games like Ignisia
Games like Ignisia include Enshrouded, Monster Hunter: World, Valheim, Hogwarts Legacy, and Once Human. We matched them by the tags players give Ignisia on Steam (RPG, Adventure, Action RPG, Singleplayer, and Building): closest matches first, and among equally close ones the better-known games.

Enshrouded
Shared: RPG · Adventure · Survival

Monster Hunter: World
Shared: Co-op · RPG · Adventure

Valheim
Shared: Building · Survival · Adventure

Hogwarts Legacy
Shared: Adventure · RPG · Singleplayer

Once Human
Shared: Co-op · Building · Survival

The Forest
Shared: Adventure · Building · Survival

Terraria
Shared: Adventure · Survival · Building

The Elder Scrolls Online - Standard Edition
Shared: RPG · Adventure · Singleplayer

Sons Of The Forest
Shared: Co-op · Survival · Building

Fallout 4
Shared: RPG · Singleplayer · Adventure

Rust
Shared: Adventure · Building · Survival

ARK: Survival Evolved
Shared: Adventure · Building · Survival

The Elder Scrolls IV: Oblivion Remastered
Shared: RPG · Adventure · Singleplayer

Raft
Shared: Co-op · Survival · Building

Conan Exiles Enhanced
Shared: Building · RPG · Survival

Dune: Awakening
Shared: Adventure · Exploration · Survival

Portal Knights
Shared: Adventure · RPG · Building

Don't Starve Together
Shared: Co-op · Adventure · Survival

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Adventure · Singleplayer

Tainted Grail: The Fall of Avalon
Shared: RPG · Adventure · Singleplayer

Dragon's Dogma 2
Shared: RPG · Action RPG · Adventure

Core Keeper
Shared: Exploration · Co-op · Survival

Fallout: New Vegas
Shared: RPG · Singleplayer · Adventure

Scrap Mechanic
Shared: Building · Adventure · Co-op