Games like Iffy Institute
Games like Iffy Institute include ShellShock Live, Plague Inc: Evolved, Town of Salem, PUBG: BATTLEGROUNDS, and Witch It. We matched them by the tags players give Iffy Institute on Steam (Action, Indie, Casual, Strategy, and Multiplayer): closest matches first, and among equally close ones the better-known games.

ShellShock Live
Shared: Action · Strategy · Multiplayer

Plague Inc: Evolved
Shared: Strategy · Indie · Multiplayer

Town of Salem
Shared: Strategy · Multiplayer · Indie

PUBG: BATTLEGROUNDS
Shared: Multiplayer · Action · Tactical

Witch It
Shared: Casual · Indie · Multiplayer

Timberman
Shared: Casual · Indie · Action

WARDOGS
Shared: Action · Multiplayer · Tactical

Insurgency
Shared: Action · Multiplayer · Tactical

SMITE®
Shared: Action · Multiplayer · Strategy

Formata
Shared: Action · Indie · Strategy

Notes of Soul
Shared: Action · Indie · Multiplayer

Gang Beasts
Shared: Action · Multiplayer · Casual

EmergeNYC
Shared: Action · Multiplayer · Early Access

Natural Selection 2
Shared: Strategy · Action · Multiplayer

Police Stories
Shared: Action · Strategy · Tactical

Who's Your Daddy?!
Shared: Multiplayer · Strategy · Casual

Golf With Your Friends
Shared: Casual · Multiplayer · Indie

Mount & Blade II: Bannerlord
Shared: Strategy · Action · Multiplayer

SMITE 2
Shared: Action · Strategy · Casual

Arma 3
Shared: Action · Multiplayer · Tactical

Tooth and Tail
Shared: Strategy · Indie · Action

Tower Unite
Shared: Casual · Multiplayer · Indie

Snakeybus
Shared: Indie · Action · Casual

Bodycam
Shared: Multiplayer · Tactical · Indie