Games like Blackdoor
Games like Blackdoor include Hacknet, Uplink, Cyber Manhunt, Hacker Simulator, and Grey Hack. We matched them by the tags players give Blackdoor on Steam (Simulation, Hacking, Programming, Typing, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Hacknet
Shared: Simulation · Hacking · Programming

Uplink
Shared: Simulation · Hacking · Programming

Cyber Manhunt
Shared: Simulation · Hacking · Singleplayer

Hacker Simulator
Shared: Simulation · Hacking · Singleplayer

Grey Hack
Shared: Simulation · Hacking · Programming

Papers, Please
Shared: Simulation · Singleplayer · Story Rich

s.p.l.i.t
Shared: Simulation · Hacking · Singleplayer

Beholder
Shared: Simulation · Singleplayer · Strategy

This War of Mine
Shared: Simulation · Singleplayer · Strategy

Plague Inc: Evolved
Shared: Simulation · Singleplayer · Strategy

This Is the Police
Shared: Story Rich · Simulation · Singleplayer

hack_me
Shared: Simulation · Hacking · Singleplayer

911 Operator
Shared: Simulation · Singleplayer · Strategy

TIS-100
Shared: Programming · Simulation · Hacking

HackHub - Ultimate Hacker Simulator
Shared: Simulation · Hacking · Typing

Sultan's Game
Shared: Singleplayer · Simulation · Story Rich

EXAPUNKS
Shared: Programming · Hacking · Simulation

Hacker Evolution
Shared: Simulation · Hacking · Singleplayer

Cyberpunk 2077
Shared: Cyberpunk · Singleplayer · Story Rich

Beholder 2
Shared: Simulation · Story Rich · Singleplayer

This Is the Police 2
Shared: Singleplayer · Story Rich · Strategy

Lobotomy Corporation | Monster Management Simulation
Shared: Simulation · Story Rich · Singleplayer

RimWorld
Shared: Simulation · Singleplayer · Strategy

CaseCracker
Shared: Hacking · Text-Based · Simulation