Games like I'm Truely a Good Guy!
Games like I'm Truely a Good Guy! include Among Us, Phasmophobia, Liars Bar, Pacify, and Lethal Company. We matched them by the tags players give I'm Truely a Good Guy! on Steam (Social Deduction, Casual, Dark, First-Person, and Horror): closest matches first, and among equally close ones the better-known games.

Among Us
Shared: Social Deduction · Multiplayer · Online Co-Op

Phasmophobia
Shared: Horror · Multiplayer · Online Co-Op

Liars Bar
Shared: Casual · Multiplayer · Online Co-Op

Pacify
Shared: Horror · Multiplayer · Online Co-Op

Lethal Company
Shared: First-Person · Horror · Online Co-Op

R.E.P.O.
Shared: Horror · First-Person · Multiplayer

Garry's Mod
Shared: Casual · Multiplayer · First-Person

Escape the Backrooms
Shared: Horror · Multiplayer · First-Person

Secret Neighbor: Hello Neighbor Multiplayer
Shared: Horror · Multiplayer · Cartoony

Buckshot Roulette
Shared: Dark · First-Person · Horror

DEVOUR
Shared: Horror · Dark · Multiplayer

Backrooms: Escape Together
Shared: Horror · Multiplayer · First-Person

Dead by Daylight
Shared: Horror · Multiplayer · Online Co-Op

Bloons TD 6
Shared: Casual · Multiplayer · Online Co-Op

Who's Your Daddy?!
Shared: First-Person · Multiplayer · Casual

Dale & Dawson Stationery Supplies
Shared: Casual · Social Deduction · First-Person

In Silence
Shared: Horror · Multiplayer · Online Co-Op

Demonologist
Shared: Horror · First-Person · Dark

Left 4 Dead 2
Shared: Multiplayer · Horror · Online Co-Op

LOCKDOWN Protocol
Shared: Social Deduction · Multiplayer · Casual

Blood and Bacon
Shared: Multiplayer · Horror · Funny

Scam Line
Shared: Dark · Social Deduction · Multiplayer

Nuclear Nightmare
Shared: Horror · First-Person · Online Co-Op

RV There Yet?
Shared: Multiplayer · First-Person · Online Co-Op