Life & fun · alternatives · 2026

24 alternatives to Simseeder – an MMO Roguelike where players build the game

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1CA
   Crown – A flexible game engine written from scratch in C++▲193

   2017 · github.com · its alternatives →

2. 2TA
   Toy – A thin C++ game engine▲180

   2018 · hugoam.github.io · its alternatives →

3. 3SB
   Sleeping Beauty, a 7-day roguelike game▲319

   2017 · ondras.github.io · its alternatives →

4. 4M1
   MNML – 1v1 turn-based strategy game built with Rust and HTML5▲127

   2019 · mnml.gg · its alternatives →

5. 5
   Jupiter Hell▲54

   A modern turn-based sci-fi roguelike

   2016 · its alternatives →

6. 6ES
   Eigengrau's Generator – A procedural city generator for tabletop gaming▲153

   2019 · github.com · its alternatives →

7. 7
   Gridland ▲87

   An adictive roleplaying stacking puzzle

   2015 · its alternatives →

8. 8GO
   Gamification.org - Open Source Game Mechanics▲76

   2010 · gamification.org · its alternatives →

9. 9AO
   An Open Retro RPG Game Maker in Python▲215

   2016 · github.com · its alternatives →

10. 10TC
    The Choice – An online programming puzzle RPG▲95

    2013 · thechoice.amos.me · its alternatives →

11. 11HA
    HearthSim, an AI and game simulator for Hearthstone Heroes of Warcraft▲115

    2014 · github.com · its alternatives →

12. 12MI
    MMORPG in 55KB of Javascript▲178

    2013 · aberoth.com · its alternatives →

13. 13MJ
    Merchant.js, a state framework for creating idle games▲86

    2017 · github.com · its alternatives →

14. 14PM
    Paper Millionaire – A Startup Stock Option Horror Roguelike▲7

    Apr 2026 · paper-millionaire.pagey.site · its alternatives →

15. 15
    Rogue quest: Necromancer▲53

    A fantasy roguelike

    2016 · its alternatives →

16. 16CT
    Crown – The Flexible Game Engine▲20

    2017 · github.com · its alternatives →

17. 17RA
    Rogue AI Dungeon, javacript bot scripting game▲17

    2016 · bovard.github.io · its alternatives →

18. 18AP
    A point-and-click game engine▲72

    2019 · purdone.com · its alternatives →

19. 19GM
    Garden Madness, a flowery HTML5 game▲53

    2011 · thearca.de · its alternatives →

20. 20PP
    Practical, Pure Functional Game Engine▲29

    2014 · github.com · its alternatives →

21. 21OL
    Our little html5/js dungeon crawler.▲71

    2010 · tametick.com · its alternatives →

22. 22HL
    Hearthstone-like card game builder for humans▲44

    2016 · dulst.com · its alternatives →

23. 23SA
    Skycraft, a creative voxel adventure game in WebGL▲23

    2013 · skycraft.io · its alternatives →

24. 24HM
    HTML5 MMORPG – almost 7 years in the making▲47

    2019 · data.mo.ee · its alternatives →

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 →