Single-player games like Mainlining
Below are 11 single-player Steam games similar to Mainlining, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Mainlining page.
Ranked picks
- 1

Hacknet
Single-player alternative to Mainlining — playable solo, no multiplayer required. Shares Indie and Simulation with Mainlining.
Hacknet is an immersive, terminal-based hacking simulator for PC. Dive down a rabbit hoIe as you follow the instructions of a recently deceased hacker, whose death may not have been the accident the media reports.
- 2

Midnight Protocol
Single-player alternative to Mainlining — playable solo, no multiplayer required. Shares Indie and Adventure with Mainlining.
Midnight Protocol is a tactical narrative-driven RPG with unique keyboard-only controls. Hack into servers, beat security systems and discover encrypted secrets while you try to find answers to why and how you got doxxed.
- 3

Uplink
Single-player alternative to Mainlining — playable solo, no multiplayer required. Shares Indie with Mainlining.
Uplink lets you play as a freelance hacker tackling risky contracts for corporations. Break into systems, steal data, sabotage rivals, and upgrade your gear. Support factions or go rogue in this immersive, strategy-driven hacking simulation game where your choices shape the outcome.
- 4

Quadrilateral Cowboy
Single-player alternative to Mainlining — playable solo, no multiplayer required. Shares Indie and Adventure with Mainlining.
When you have a top-of-the-line hacking deck armed with a 56.6k modem and a staggering 256k RAM, it means just one thing: you answer only to the highest bidder.
- 5

Else Heart.Break()
Single-player alternative to Mainlining — playable solo, no multiplayer required. Shares Indie and Adventure with Mainlining.
A game about friendship, love and technology in a place where bits have replaced atoms.
- 6

hackmud
Single-player alternative to Mainlining — playable solo, no multiplayer required. Shares Indie and Simulation with Mainlining.
hackmud is a retro cyberpunk RPG where you play a digital persona in a chaotic, unpredictable, and often goofy abandoned internet. Enter a 90s hacker movie filled with scripts, scams, and sabotage. Explore the world of digital secrets and forge your legacy through cunning, creativity, or disruption.
- 7

Hacker Simulator
Single-player alternative to Mainlining — playable solo, no multiplayer required. Shares Indie and Simulation with Mainlining.
Become a hacker and build your online reputation to the top. Complete contracts, buy new programs, upgrade your computer, crack wifi networks and infiltrate peoples or companies online systems.
- 8

Orwell: Keeping an Eye On You
Single-player alternative to Mainlining — playable solo, no multiplayer required. Shares Indie and Adventure with Mainlining.
Big Brother has arrived - and it’s you. Investigate the lives of citizens to find those responsible for a series of terror attacks. Information from the internet, personal communications and private files are all accessible to you. But, be warned, the information you supply will have consequences.
- 9

Papers, Please
Single-player alternative to Mainlining — playable solo, no multiplayer required. Shares Indie and Adventure with Mainlining.
Congratulations. The October labor lottery is complete. Your name was pulled. For immediate placement, report to the Ministry of Admission at Grestin Border Checkpoint. An apartment will be provided for you and your family in East Grestin. Expect a Class-8 dwelling.
- 10

NITE Team 4 - Military Hacking Division
Single-player alternative to Mainlining — playable solo, no multiplayer required. Shares Indie and Adventure with Mainlining.
NITE Team 4 is a military hacking simulation game that explores the world of cyberwarfare and features realistic mission scenarios.
- 11

Hypnospace Outlaw
Single-player alternative to Mainlining — playable solo, no multiplayer required. Shares Simulation with Mainlining.
Greetings Enforcer, and thank you for enlisting in the Hypnospace Patrol Department! As the world falls into its slumber, Hypnospace becomes a bustling global village. These virtual streets aren't going to police themselves!