IMHO.

Games like SYSTEM 21

If SYSTEM 21 is your kind of game, the closest matches are TIC.EXE, Netspectre and Trust Me, It Binds — picked from the ranked list below. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.

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About SYSTEM 21: Manipulate a blackjack game from the inside as a dealer subroutine in this minimalist roguelike deckbuilder. Read the visible card's queue, execute illegal code exploits to alter the upcoming cards, and fleece high-rolling patrons before the system anti-cheat detects your anomaly.

StrategyIndieWindows · macOSby System Forge Studio
SYSTEM 21 — Steam game cover

Players who liked SYSTEM 21 also play

Steam players who put hours into SYSTEM 21 also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.

  1. TIC.EXE

    WHY THIS

    Top pick for SYSTEM 21 fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with SYSTEM 21.

    Three in a row is not a win — it is a discharge. A tactical grid roguelite: fight hostile processes on a shifting board, build an engine out of 30 modules, and clear eight sectors before the machine answers its own launch request.

    2027StrategyIndieSteam ↗
  2. Netspectre

    WHY THIS

    Second-strongest match for SYSTEM 21 fans by collaborative filtering across millions of Steam libraries. Shares Indie with SYSTEM 21.

    Infiltrate corporate networks, conspire with contacts in boutique bars, then change the world forever by making the one final, impossible run. Become a true Netspectre, an elite hacker-for-hire, in this cyberpunk hacker roguelike.

    IndieRPGSteam ↗
  3. Trust Me, It Binds

    WHY THIS

    Third-strongest match for SYSTEM 21 fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with SYSTEM 21.

    A procedural deckbuilder where you build real molecules and sell increasingly questionable confidence. Play cards, chase the target, stack absurd bonuses, and turn strange chemistry into an irresistible valuation. Nobody really understands molecules. Fortunately everyone understands numbers.

    StrategyIndieSimulationSteam ↗
  4. 核心防线 core defense line

    WHY THIS

    Ranked #4 for SYSTEM 21 fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with SYSTEM 21.

    You are a cloud operator. In the game, to protect the core and resist the continuous virus invasions, you build defenses, construct cards, install creatively designed plugins that provide you with various attack methods, repair external nodes, and at the same time offer you more convenient defense.

    2026StrategyIndieCasualSteam ↗
  5. Cyberdeck Shuffle

    WHY THIS

    Ranked #5 for SYSTEM 21 fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with SYSTEM 21.

    Hack the system in this deckbuilder meets strategic shape-matching puzzle game. Swap bits to match codes, play cards to annihilate the grid and place synergistic modifiers, and chain combos to break through cyber defences and infiltrate the corporate network.

    StrategyIndieSteam ↗
  6. Infinity Sweeper

    WHY THIS

    Ranked #6 for SYSTEM 21 fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with SYSTEM 21.

    Think you know Minesweeper? Think again. Infinity Sweeper brings roguelite elements to the classic puzzle - upgrades, boss fights and a constantly evolving grid that demands both logic and instinct. One wrong click could end it all.

    2026StrategyIndieCasual9.99 USDDeck PlayableSteam ↗
  7. Brawl To The West

    WHY THIS

    Ranked #7 for SYSTEM 21 fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with SYSTEM 21.

    "Join this hilarious auto-battler! Equip gear, grow fruit trees, and tame monsters to build your team. Choose unique characters or battle others in ranked mode—every run is fresh! Weaklings perish; victors take all. Will you go the farthest? Dive in now!"

    2025StrategyIndieCasual8.99 USDDeck PlayableSteam ↗
  8. Into The Grid

    WHY THIS

    Ranked #8 for SYSTEM 21 fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with SYSTEM 21.

    Become a master hacker in this Cyberpunk Roguelike Deckbuilder. Explore the dangers of cyberspace and fight evil corporations. Build and upgrade a deck of powerful programs. Unlock perks and skills, and unleash digital hell on your enemies. Dive Into The Grid!

    2025StrategyIndieRPG11.99 USDDeck PlayableSteam ↗

Free alternatives

Free-to-play games that recommended players of this title also tend to enjoy.

  1. Helltaker

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with SYSTEM 21.

    Helltaker is a short game about sharply dressed demon girls.

    2020IndieAdventureFree To PlayFreeDeck PlayableSteam ↗
  2. Travellin Cats in Paris

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with SYSTEM 21.

    Find 100 cats hidden in Paris, France in this cute hand-drawn hidden object game by Travellin Cats - the original viral hidden cat game creator!

    2023IndieFree To PlayCasualFreeDeck VerifiedSteam ↗
  3. Star Fetchers

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with SYSTEM 21.

    The introduction to a wild ride with gangsters and deep state conspiracy theories

    2020ActionIndieAdventureFreeDeck PlayableSteam ↗
  4. Coloring Pixels

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with SYSTEM 21.

    A relaxing coloring by numbers game. Enjoy completing a variety of images with differing themes, complexity, and sizes.

    2018IndieFree To PlayCasualFreeSteam ↗
  5. Eternal Senia

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with SYSTEM 21.

    Thoughts and expectations ARPG

    2015ActionIndieRPGFreeSteam ↗
  6. There Is No Game: Jam Edition 2015

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with SYSTEM 21.

    A little game that’s not a game, winner of an old game jam that nobody’s ever heard of. So DON'T INSTALL IT!

    2020IndieAdventureFree To PlayFreeDeck VerifiedSteam ↗
  7. 100 Asian Cats

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Indie with SYSTEM 21.

    🏮🐈 100 Asian Cats - Join the cutest adventure in the Asia! 😻 🌸 Explore the charming hand-drawn artwork of Asian temples 🏯 as you embark on a quest to find 100 adorable cats hidden throughout the game. 🕵️‍♂️❌ Can you find them all? 🕵️‍♂️🐈✅

    2023ActionSportsStrategyFreeDeck PlayableSteam ↗
  8. Cube Escape: Paradox

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with SYSTEM 21.

    The tenth Cube Escape follows the story of detective Dale Vandermeer who finds himself trapped in two different universes and needs to escape. Cube Escape: Paradox will be released together with the accompanying Paradox: A Rusty Lake Film.

    2018IndieAdventureFree To PlayFreeDeck PlayableSteam ↗

Frequently asked about SYSTEM 21

What games are most similar to SYSTEM 21?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside SYSTEM 21 are TIC.EXE, Netspectre, Trust Me, It Binds.
Who developed SYSTEM 21?
SYSTEM 21 was developed by System Forge Studio.

imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on SYSTEM 21.

For library-aware picks tuned to your specific taste, sign in with Steam on the home page.

16 Games Like SYSTEM 21 — Ranked for 2026 · imho.run