IMHO.

Games like The Ultra Code

If The Ultra Code is your kind of game, the closest matches are Kaizen: A Factory Story, Train Set Code and SHENZHEN I/O — picked from the ranked list below. Reviewers single out its atmospheric, challenging and contemplative. 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 The Ultra Code: Build machines... break codes... win the war! It's 1942 and the world is engulfed in war. Meanwhile, in a country mansion in South East England, a group of expert mathematicians are fighting a war of their own, breaking an unbreakable Nazi code... Enigma!

2019StrategyIndie5.99 USDWindows · macOSby Jack Gloyens
The Ultra Code — Steam game cover
Players highlight
Design state machines to classify binary stringsFeels like revisiting college computation theoryFreeplay mode offers deeper challengeAtmosphericChallengingContemplative

Players who liked The Ultra Code also play

Steam players who put hours into The Ultra Code 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. Kaizen: A Factory Story

    WHY THIS

    Shares an atmospheric mood with The Ultra Code.

    Top pick for The Ultra Code fans by collaborative filtering across millions of Steam libraries. Shares Strategy with The Ultra Code.

    Kaizen is an open-ended puzzle automation game from the original Zachtronics team, set in 1980s Japan. Design, build, and optimize production lines to create iconic products, like calculators, camcorders, and arcade machines.

    2025StrategySimulation9.99 USDDeck PlayableSteam ↗
  2. Train Set Code

    WHY THIS

    Second-strongest match for The Ultra Code fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with The Ultra Code.

    Build a train set layout where everything runs on its own. Automate points and signals to direct the trains and keep them moving. Get creative and design a huge network that carries a fleet of trains.

    2026StrategyIndieSimulationSteam ↗
  3. SHENZHEN I/O

    WHY THIS

    Shares a contemplative mood with The Ultra Code.

    Third-strongest match for The Ultra Code fans by collaborative filtering across millions of Steam libraries. Shares Indie with The Ultra Code.

    BUILD CIRCUITS. WRITE CODE. RTFM.

    2016IndieSimulation14.99 USDDeck PlayableSteam ↗
  4. Comet 64

    WHY THIS

    Shares an atmospheric mood with The Ultra Code.

    Ranked #4 for The Ultra Code fans by collaborative filtering across millions of Steam libraries. Shares Indie with The Ultra Code.

    Comet 64 is a programming puzzle game. The year is 1984. All you got is a Comet 64 home computer and the operator's manual it came with.

    2021IndieSimulation14.99 USDDeck PlayableSteam ↗
  5. Turing Complete

    WHY THIS

    Shares a challenging mood with The Ultra Code.

    Ranked #5 for The Ultra Code fans by collaborative filtering across millions of Steam libraries.

    Learn CPU architecture with puzzles

    2021SimulationEarly Access19.99 USDDeck PlayableSteam ↗
  6. Human Resource Machine

    WHY THIS

    Shares a contemplative mood with The Ultra Code.

    Ranked #6 for The Ultra Code fans by collaborative filtering across millions of Steam libraries. Shares Indie with The Ultra Code.

    Program little office workers to solve puzzles. Be a good employee! The machines are coming... for your job. From the creators of World of Goo and Little Inferno.

    2015IndieSimulationCasual14.99 USDDeck VerifiedSteam ↗
  7. Quantum Odyssey

    WHY THIS

    Shares an atmospheric mood with The Ultra Code.

    Ranked #7 for The Ultra Code fans by collaborative filtering across millions of Steam libraries. Shares Indie with The Ultra Code.

    Master the most counter-intuitive logic in existence. Created by the researchers who defined Quantum Literacy, Quantum Odyssey is an open-ended puzzle game where you craft real quantum algorithms. Optimize 500+ challenges, hack other players, and gain insights textbooks can’t provide.

    2025IndieSimulationEarly Access17.99 USDDeck PlayableSteam ↗
  8. Retro Gadgets

    WHY THIS

    Shares a contemplative mood with The Ultra Code.

    Ranked #8 for The Ultra Code fans by collaborative filtering across millions of Steam libraries.

    Retro Gadgets is a sandbox where you build, code, and customize gadgets inspired by old-school electronics.

    2022SimulationEarly Access19.99 USDDeck PlayableSteam ↗

Cheaper alternatives

Games in the same vein priced at least 40% below The Ultra Code at current Steam store prices.

  1. POSTAL 2

    WHY THIS

    Priced ~83% under The Ultra Code on Steam right now. Shares Indie with The Ultra Code.

    Live a week in the life of "The POSTAL Dude"; a hapless everyman just trying to check off some chores. Buying milk, returning an overdue library book, getting Gary Coleman's autograph, what could possibly go wrong?

    2012ActionIndieAdventure0.99 USDDeck VerifiedSteam ↗
  2. Buckshot Roulette

    WHY THIS

    Priced ~50% under The Ultra Code on Steam right now. Shares Indie with The Ultra Code.

    Play Russian roulette with a 12-gauge shotgun. Four enter. One leaves. Roll the dice with your life. Good luck!

    2024ActionIndieSimulation2.99 USDDeck PlayableSteam ↗
  3. The Test

    WHY THIS

    Priced ~67% under The Ultra Code on Steam right now. Shares Indie with The Ultra Code.

    You will answer a series of questions that will reveal truths from deep within. These questions may make you uncomfortable, but with great knowledge comes great sacrifice. Can you make it all the way through The Test, and if you do, are you sure you want the answers you seek?

    2020IndieAdventureSimulation1.99 USDDeck VerifiedSteam ↗
  4. Milk inside a bag of milk inside a bag of milk

    WHY THIS

    Priced ~75% under The Ultra Code on Steam right now. Shares Indie with The Ultra Code.

    A short story about what sort of challenges everyday little things can be. Help the girl buy milk, be the first not to disappoint her.

    2020IndieAdventure1.49 USDDeck PlayableSteam ↗
  5. Crypt of the NecroDancer

    WHY THIS

    Priced ~50% under The Ultra Code on Steam right now. Shares Indie with The Ultra Code.

    Crypt of the NecroDancer is an award winning hardcore roguelike rhythm game. Move to the music and deliver beatdowns to the beat! Groove to the epic Danny Baranowsky soundtrack, or select songs from your own MP3 collection!

    2015ActionIndieRPG2.99 USDDeck VerifiedSteam ↗
  6. Super Hexagon

    WHY THIS

    Priced ~50% under The Ultra Code on Steam right now. Shares Indie with The Ultra Code.

    Super Hexagon is a minimal action game by Terry Cavanagh, with music by Chipzel.

    2012ActionIndie2.99 USDDeck VerifiedSteam ↗
  7. Nodebuster

    WHY THIS

    Priced ~50% under The Ultra Code on Steam right now. Shares Strategy and Indie with The Ultra Code.

    Nodebuster is a short, experimental incremental game about busting nodes and destroying reality.

    2024StrategyIndieSimulation2.99 USDDeck PlayableSteam ↗
  8. Sally Face - Episode One

    WHY THIS

    Priced ~50% under The Ultra Code on Steam right now. Shares Indie with The Ultra Code.

    Delve into a dark adventure following the boy with a prosthetic face and a tragic past. Unravel the sinister mysteries of Sally's world to find the truth that lies hidden beneath the shadows.

    2016IndieAdventure2.99 USDDeck VerifiedSteam ↗

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 The Ultra Code.

    Helltaker is a short game about sharply dressed demon girls.

    2020IndieAdventureFree To PlayFreeDeck PlayableSteam ↗
  2. Ultimate Custom Night

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with The Ultra Code.

    Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!

    2018ActionIndieFree To PlayFreeSteam ↗
  3. Bongo Cat

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with The Ultra Code.

    Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?

    2025IndieSimulationMassively MultiplayerFreeDeck PlayableSteam ↗
  4. Awaria

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with The Ultra Code.

    Awaria is a short game about working in haunted maintenance tunnels.

    2024ActionIndieFree To PlayFreeDeck PlayableSteam ↗
  5. Steam Engine Simulator

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it.

    The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.

    2023SimulationFreeDeck VerifiedSteam ↗
  6. Iron Snout

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with The Ultra Code.

    Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.

    2016ActionIndieFree To PlayFreeDeck PlayableSteam ↗
  7. Magic Archery

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with The Ultra Code.

    Train a commoner to become the greatest archer in this short incremental game! Increase your stats, gather wealth from quests, buy upgrades, and infuse your arrows with magic.

    2024IndieSimulationRPGFreeDeck PlayableSteam ↗
  8. Coloring Pixels

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with The Ultra Code.

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

    2018IndieFree To PlayCasualFreeSteam ↗

Frequently asked about The Ultra Code

How much does The Ultra Code cost?
The Ultra Code is listed on Steam at 5.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to The Ultra Code?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside The Ultra Code are Kaizen: A Factory Story, Train Set Code, SHENZHEN I/O.
Who developed The Ultra Code?
The Ultra Code was developed by Jack Gloyens and published by Flying Interactive.

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 The Ultra Code.

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

24 Games Like The Ultra Code — Ranked for 2026 · imho.run