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Life & fun · alternatives · 2026

UE

24 alternatives to Unreal Engine 4 WASM space game

Note that the demo may take up to 30 seconds to load, and initially present a white screen. I can assure you - it's worth the wait!

This is a space game built with Unreal Engine 4 and compiled to WebAssembly for browser play. Players can experience the game directly at play.spacelancers.com without installation. The demo requires patience during… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Unreal Engine 4 WASM space game launched in 2023; newer entries below may have overtaken it.

  1. 1AF

    I've seen some interests in (simulation) video games here on HN so I thought I'd share a short version of our story. More than 6 years ago, me and my friend from university were playing around with an idea of making a game we always wanted to play. We worked on it on weekends but the progress was quite slow, especially due to so many dead ends and wasted effort. Eventually however, we solidified our direction and decided to take the risk to resign from our well paid SWE jobs and work on it full time. It took more than a year but yesterday we have finally released it on Steam:…

    2022 · its alternatives →

  2. 2

    New imaging technology Transforms Movies Into Video Games

    2022 · unrealengine.com · its alternatives →

  3. 3MM
  4. 4

    Hello HN! We’re a small creative studio specializing in real-time 3D experiences. Netlify approached us to design and build an interactive experience to celebrate reaching 5 million developers. Inspired by the classic game Marble Madness, we created a gamified experience where users control a ball through playful, interactive levels. The goal was to blend marketing content with the look and feel of a game to engage users. The app is built with Three.js [1], using our custom render pipeline and shaders, and uses Rapier for physics simulation [2]. The 2D content is overlaid on the WebGL view…

    2024 · 5-million-devs.netlify.com · its alternatives →

  5. 5UL

    In the wake of all the Unity nonsense, just wanted to toss the Raverie engine into this mix :) We’re building off a previous engine that we worked on for DigiPen Institute of Technology called the Zero Engine with a similar component based design architecture to Unity. Our engine had a unique feature called Spaces: separate worlds/levels that you can instantiate and run at the same time, which became super useful for creating UI overlays using only game objects, running multiple simulations, etc. The lighting and rendering engine is scriptable, and the default deferred rendering…

    2023 · raverie-us.github.io · its alternatives →

  6. 6

    I've been working on Athena Crisis for about two years, and full time for the past 9 months. The game is entirely built from scratch using React and CSS without a game engine. It runs anywhere, including the Steam Deck. You can even use a gamepad on the landing page to play! Previously the landing page had a video of the game but my goal was to always just put the actual game on the website. I merged the landing page into the game's monorepo, added the game's React components, and boom – the video was replaced with a playable version of Athena Crisis. Of course, the real game has tons more…

    2024 · athenacrisis.com · its alternatives →

  7. 73M

    2019 · urk-3d-multi-space-game.herokuapp.com · its alternatives →

  8. 8

    Earlier this year, we released our open-source game engine [0] built with Rust, WebAssembly, and WebGPU. Today, we’re happy to announce the Ambient platform, which brings web deployment, server hosting, and more to the runtime. With Ambient, you can make a game, deploy it to the browser in one command, share your URL and instantly play with others, no downloads or installs needed. Our WASM use is innovative; it is being used as both a sandboxed runtime for user code, and as a way to run the entire Ambient runtime in the browser. This, paired with our ECS data model, enables a highly modular…

    2023 · ambient.run · its alternatives →

  9. 9IM

    I made this site using R3F (https://github.com/pmndrs/react-three-fiber), a React renderer for 3JS (https://threejs.org/). The celestial bodies are Three.JS meshes. I used loaders (namely 'useLoader' from R3F and 'GLTFLoader' from 3JS) to import 3D models, such as International Space Station. More on loading models in R3F: https://docs.pmnd.rs/react-three-fiber/tutorials/loading-mod... I've future plans for this side project. It would be great to hear from the HN community before diving into them. Enjoy! P.S: Getting an empty…

    2022 · spaceinbrowser.com · its alternatives →

  10. 10
    AstroGrid▲113

    Explore the entire universe in your browser, in real 3D

    Apr 2026 · velonspace.com · its alternatives →

  11. 11

    Desktop only, the progress bar may go to 98% and sit there for a while but it will eventually load in. For anyone curious, this is an Unreal Engine 5 sample that our team ported to WebAssembly using our custom web pipeline. Demo is not made by us, we just handled the port.

    2025 · play-dev.simplystream.com · its alternatives →

  12. 12

    An open world starship simulator (Early Access Game)

    2015 · store.steampowered.com · its alternatives →

  13. 13

    Most games have limits. You can only use preset features, need coding for customization & adding mods, require expensive extra devices. We wanted to remove those barriers. That’s why we are building space zero—a browser based 3D world powered by AI. We plan to build players can freely mix items to generate unexpected creations with unique properties and sounds. Also the world itself is dynamically generated, evolving endlessly. I uploaded a demo version I’ve been working on for the past month! I hope to get any feedbacks or comments :)

    2025 · 0.space · its alternatives →

  14. 14EA

    Hi all, I'm excited to share Eonfall with Hacker News Community! It's been 2-years in the making built by a 2 man team. Eonfall, is a new third-person co-op action game with rogue-lite elements built exclusively for the web! We've finally reached a release candidate state and set our official public release date for Jan 15th! The game's current version 5.0.0-beta is live and available to test play today! Unity game engine was used to develop the game along with other services to handle the backend, and Nuxt 3 + Nuxt UI to handle the front-end. We welcome any and all questions, feedback &…

    2024 · eonfall.com · its alternatives →

  15. 15

    Hi HN, I built a small game in just 24 hours for a 64x64 pixel art lowrez game jam. The result is soko64, a tiny Sokoban game written in Dart. This project was primarily a first test for a new web game library I've been developing for Dart (Bullseye2D). I wanted to see how quickly I could build a complete, playable game with it. You can play soko64 directly in your browser: https://joemanaco.itch.io/soko64 The source code is on GitHub: https://github.com/JochenHeizmann/soko64 Happy to answer any questions! :)

    2019 · joemanaco.itch.io · its alternatives →

  16. 16

    Spaceship Simulation

    2015 · its alternatives →

  17. 17

    This is something that I've been working on on-and-off in my spare time for the last few years. I started in 2020 during Covid trying to do a Mount and Blade style map in UE4, and it grew from there until where it is now - I would just add a feature, then another, until it came together. Since the start of the year I've really been trying to polish it some more. I've got the full thing planned for a Q3 25 release. Github release if you don't have Steam: https://github.com/joe-gibbs/fall-of-an-empire-release

    2024 · store.steampowered.com · its alternatives →

  18. 18

    Web-based lunar voxel game. Contribute to EngineersNeedArt/Mooncraft2000 development by creating an account on GitHub.

    2022 · github.com · its alternatives →

  19. 19

    The Unreal Engine 5 Lyra sample now runs in WebGPU. Live link coming soon, stay tuned! #WebGPU #UnrealEngine5

    2024 · twitter.com · its alternatives →

  20. 20MS

    Did this a few years ago. Seems apropos. Sources and more here: https://github.com/EngineersNeedArt/Mooncraft2000

    Apr 2026 · mooncraft2000.com · its alternatives →

  21. 21

    I built this with Claude cause I always wanted to tinker with a simulation economoy and I love space themes. A space-economy sim where nothing is scripted. A few hundred autonomous ships each run their own planner. Some chase the best trade route, take a delivery contract, refuel, retrofit at a shipyard, or dock so the crew can rest before morale tanks. Markets price everything off supply with shortage-urgency multipliers, factions tax and subsidize, populations migrate when they're unhappy, and stations that go broke get abandoned and rot. It started as an Elixir/Phoenix prototype, but…

    Jul 2026 · github.com · its alternatives →

  22. 22

    Ready for a space adventure?

    2018 · makizo.itch.io · its alternatives →

  23. 23

    Run Unreal Engine projects in the browser

    2022 · make.live · its alternatives →

  24. 24

    A breathtaking space game in your browser

    2017 · ad.admitad.com · its alternatives →

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