Games like IAIDO
Games like IAIDO include METAL GEAR RISING: REVENGEANCE, Ghostrunner, Onimusha: Way of the Sword, STAR WARS Jedi: Survivor™, and Blade and Sorcery. We matched them by the tags players give IAIDO on Steam (Action, Swordplay, Singleplayer, Sci-fi, and Hack and Slash): closest matches first, and among equally close ones the better-known games.

METAL GEAR RISING: REVENGEANCE
Shared: Action · Swordplay · Hack and Slash

Ghostrunner
Shared: Action · Swordplay · Singleplayer

Onimusha: Way of the Sword
Shared: Action · Swordplay · Singleplayer

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

Blade and Sorcery
Shared: VR · Swordplay · Action

Clone Drone in the Danger Zone
Shared: Action · Swordplay · Robots

STAR WARS™: Squadrons
Shared: VR · Action · Singleplayer

Project Wingman
Shared: Action · Singleplayer · VR

Bright Memory: Infinite
Shared: Action · Singleplayer · Sci-fi

BONEWORKS
Shared: VR · Action · Singleplayer

Until You Fall
Shared: VR · Swordplay · Action

Vanquish
Shared: Action · Singleplayer · Sci-fi

Beat Saber
Shared: VR · Singleplayer · Action

PRAGMATA
Shared: Action · Sci-fi · Singleplayer

NINJA GAIDEN 4
Shared: Action · Hack and Slash · Singleplayer

Half-Life: Alyx
Shared: VR · Action · Singleplayer

Five Nights at Freddy's: Secret of the Mimic
Shared: Action · VR · Robots

GORN
Shared: VR · Action · Singleplayer

Hi-Fi RUSH
Shared: Action · Singleplayer · Hack and Slash

STAR WARS Jedi: Fallen Order™
Shared: Swordplay · Action · Sci-fi

Sifu
Shared: Action · Singleplayer · Swordplay

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

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

FIVE NIGHTS AT FREDDY'S: HELP WANTED
Shared: VR · Singleplayer · Action