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Life & fun · alternatives · 2026

24 alternatives to Screeps

First MMO strategy open world game played by coding in JS.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Screeps launched in 2015; newer entries below may have overtaken it.

  1. 1

    World's first MMO strategy open world game for programmers!

    2015 · its alternatives →

  2. 2

    I've liked all the projects that put LLMs into game environments. It's been a weird juxtaposition, though: frontier LLMs can one-shot full coding projects, and those same models struggle to get out of Pokémon Red's Mt. Moon. Because of this, I wanted to create a game environment that put this generation of frontier LLMs' top skill, coding, on full display. Ten years ago, a team released a game called Screeps. It was described as an "MMO RTS sandbox for programmers." The Screeps paradigm of writing code and having it executed in a real-time game environment is well suited to LLMs. Drawing on…

    Feb 2026 · llmskirmish.com · its alternatives →

  3. 3SI
  4. 4JA
  5. 5IT
  6. 6MI
  7. 7
    JSRobot▲477

    Learn to code in JavaScript by playing a game 🤖

    2017 · its alternatives →

  8. 8IM

    Hi, I've been developing an HTML5 MMORPG game where people can submit code to play a game, like collect items, destroy defense towers or kill monsters, etc.. I've been working on this for over 1.5 yrs (all my spare time) and now it's ready for preview, does anyone want to try it out? It's mostly opensource (and the rest will be opensource sooner or later) Please access it with PC, it's an HTML5 game: https://bytelegend.com/ I really want it to expand to more languages, but right now I've only finished Java part. I wonder if anyone can help me with other languages. Besides, I'm…

    2022 · bytelegend.com · its alternatives →

  9. 9

    Browser-based multiplayer Bomberman

    2015 · its alternatives →

  10. 10

    I wanted to create an LLM game benchmark that put this generation of frontier LLMs' top skill, coding, on full display. Ten years ago, a team released a game called Screeps. It was described as an "MMO RTS sandbox for programmers." In Screeps, human players write javascript strategies that get executed in the game's environment. The Screeps paradigm, writing code and having it execute in a real-time game environment, is well suited for an LLM benchmark. Drawing on a version of the Screeps open source API, LLM Skirmish pits LLMs head-to-head in a series of 1v1 real-time strategy games.

    Feb 2026 · llmskirmish.com · its alternatives →

  11. 11
    PlayJS▲138

    Playground JavaScript web, now with superpowers

    2023 · its alternatives →

  12. 12

    A voxel MMORPG sandbox

    2015 · its alternatives →

  13. 13
    Blocks▲85

    A minimalist browser-based game.

    2016 · its alternatives →

  14. 14

    A map and catalog of game development organizations.

    2017 · its alternatives →

  15. 15

    A sandbox space experience 🚀

    2015 · its alternatives →

  16. 16HM
  17. 17

    An adictive roleplaying stacking puzzle

    2015 · its alternatives →

  18. 18
    Dreeps▲83

    A game that plays itself because you're too busy

    2015 · its alternatives →

  19. 19

    An ancient kind of game console

    2016 · its alternatives →

  20. 20
    Strut▲73

    Compete to Uncover the Map of the World

    2016 · its alternatives →

  21. 21

    A voxel based open-world sandbox game

    2015 · its alternatives →

  22. 22

    Build incredible machines in a multiplayer sandbox

    2016 · its alternatives →

  23. 23GM
  24. 24

    A HTML5/JavaScript multiplayer game experiment

    2015 · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →