Games like Iron Age
Games like Iron Age include BioShock Infinite, Hogwarts Legacy, The Elder Scrolls IV: Oblivion Remastered, Starfield, and Fallout: New Vegas. We matched them by the tags players give Iron Age on Steam (Singleplayer, Dungeon Crawler, Procedural Generation, Character Customization, and Retro): closest matches first, and among equally close ones the better-known games.

BioShock Infinite
Shared: Singleplayer · Action · First-Person

Hogwarts Legacy
Shared: Singleplayer · Fantasy · Character Customization

The Elder Scrolls IV: Oblivion Remastered
Shared: Singleplayer · Fantasy · Character Customization

Starfield
Shared: Singleplayer · Character Customization · Sci-fi

Fallout: New Vegas
Shared: Singleplayer · First-Person · RPG

Cyberpunk 2077
Shared: Singleplayer · Sci-fi · FPS

Half-Life 2
Shared: Singleplayer · Sci-fi · Action

The Elder Scrolls IV: Oblivion® Game of the Year Edition (2009)
Shared: Singleplayer · Fantasy · First-Person

Fallout 4
Shared: Singleplayer · First-Person · Adventure

Wolcen: Lords of Mayhem
Shared: Singleplayer · Dungeon Crawler · Character Customization

Crimson Desert Enhanced
Shared: Singleplayer · Action · Fantasy

Dragon's Dogma 2
Shared: Singleplayer · Fantasy · Character Customization

Black Mesa
Shared: Singleplayer · Sci-fi · FPS

UnderMine
Shared: Dungeon Crawler · Singleplayer · Procedural Generation

STAR WARS Jedi: Survivor™
Shared: Singleplayer · Action · Sci-fi

Monster Hunter: World
Shared: Character Customization · Action · Singleplayer

Bright Memory: Infinite
Shared: Singleplayer · Action · FPS

Atomic Heart
Shared: Singleplayer · Action · Adventure

Half-Life
Shared: Singleplayer · Sci-fi · FPS

The Elder Scrolls Online - Standard Edition
Shared: Singleplayer · Fantasy · Character Customization

Fallout 3
Shared: Singleplayer · Sci-fi · First-Person

God of War
Shared: Singleplayer · Action · Adventure

Delver
Shared: Dungeon Crawler · First-Person · Singleplayer

Grim Dawn
Shared: Dungeon Crawler · Singleplayer · Character Customization