Games like Protocol
Games like Protocol include Cyberpunk 2077, Half-Life 2, Black Mesa, RoboCop: Rogue City, and BioShock Infinite. We matched them by the tags players give Protocol on Steam (Action, Indie, Adventure, Cyberpunk, and Dark Humor): closest matches first, and among equally close ones the better-known games.
Cyberpunk 2077
Shared: Cyberpunk · Singleplayer · Sci-fi
Half-Life 2
Shared: Action · Sci-fi · Singleplayer
Black Mesa
Shared: Action · Sci-fi · Singleplayer
RoboCop: Rogue City
Shared: Action · Cyberpunk · Singleplayer
BioShock Infinite
Shared: Action · Singleplayer · Adventure
Fallout 4
Shared: Adventure · Singleplayer · Action
Stray
Shared: Adventure · Cyberpunk · Singleplayer
High On Life
Shared: Adventure · Dark Humor · Singleplayer
Firewatch
Shared: Adventure · Singleplayer · Indie
Half-Life: Opposing Force
Shared: Action · Singleplayer · Sci-fi
Portal 2
Shared: Singleplayer · Dark Humor · First-Person
Fallout: New Vegas
Shared: Singleplayer · Action · Adventure
Deliver Us The Moon
Shared: Indie · Action · Adventure
SANABI
Shared: Action · Cyberpunk · Adventure
Half-Life: Blue Shift
Shared: Action · Singleplayer · Sci-fi
Valley
Shared: Adventure · Indie · Action
System Shock
Shared: Action · Cyberpunk · Adventure
Half-Life
Shared: Action · Singleplayer · Sci-fi
Deus Ex: Human Revolution - Director’s Cut
Shared: Cyberpunk · Action · Sci-fi
Metro Exodus
Shared: Action · Singleplayer · Atmospheric
Deus Ex: Mankind Divided
Shared: Cyberpunk · Action · Sci-fi
Tomb Raider Game of the Year
Shared: Action · Adventure · Singleplayer
Bulletstorm: Full Clip Edition
Shared: Action · Adventure · Singleplayer
God of War
Shared: Action · Adventure · Singleplayer