38 open-source Kids' MMOs & Flash Worlds projects

Kids' MMOs & Flash Worlds (Online Service Revivals): open-source projects that exist because someone reverse engineered a closed product, sorted by GitHub stars.

1. OpenFusion★ 421 · active · C++

   Server emulator for Cartoon Network's FusionFall MMO

2. qqpet_automation★ 237 · active · JavaScript

   macOS port of QQ Pet nostalgia server via reverse analysis and Ruffle

3. Havana★ 227 · active · Java

   Java server that revives 2009-era Habbo Hotel v31

4. Club Penguin (Waddle Forever)★ 198 · active · TypeScript

   Single-player archive and local server for Club Penguin (Flash)

5. Wand★ 128 · active · Shell

   Docker setup that bundles the Houdini Club Penguin private server and its services

6. MQReawakened★ 95 · active · C#

   Open source emulation of the Monkey Quest server backend

7. sodoff★ 82 · active · C#

   School of Dragons server emulator

8. classic-dungeon-blitz★ 77 · active · TypeScript

   Fan revival of the Dungeon Blitz Flash game

9. MoleWorld-5.5.0-touchHLE-offline★ 77 · active · Rust

   Offline port of Mole Manor mobile 5.5.0 via touchHLE

10. Timeline★ 73 · dormant · Python

    Club Penguin private server emulator in Python

11. Yukon server★ 53 · active · JavaScript

    Server for Yukon, an HTML5 recreation of Club Penguin

12. Eleven Giants server★ 48 · dormant · JavaScript

    Game server that revives Tiny Speck's shut-down browser MMO Glitch

13. FlashPrivateServer★ 48 · active · Java

    Rebuilt servers for Ninja Kiwi's Flash games

14. Slippers★ 44 · slowing · Python

    Club Penguin server emulator for the original 2005 client

15. Luna★ 30 · dormant · Perl

    Club Penguin server emulator for the AS2 protocol

16. Dash★ 29 · active · HTML

    Web services server (login, registration) for the Houdini Club Penguin server

17. godfield-flash★ 25 · slowing · Python

    Server emulator and backup of the Flash version of God Field

18. Nitro renderer★ 25 · active · TypeScript

    HTML5 renderer that replaces the Flash-based Habbo Hotel client

19. lcdr utils★ 21 · slowing · Python

    Utilities for LEGO Universe file formats and network packets

20. HISP★ 19 · active · C#

    Server emulator for Horse Isle: The Secret Land of Horses (Flash MMO)

21. cpi-web-service★ 15 · dormant · Java

    Web service for Club Penguin Island private servers

22. Orion★ 11 · dormant · TypeScript

    JavaScript Habbo Hotel server emulator

23. Tusk★ 11 · dormant · Python

    Server for the Card-Jitsu Snow Club Penguin minigame

24. critters★ 10 · dormant · TypeScript

    Server implementation of Box Critters in TypeScript

25. lu_packets★ 9 · slowing · Rust

    Network protocol (de)serialization library for LEGO Universe server revival

26. private-box★ 9 · dormant · JavaScript

    Private server system for the defunct Box Critters virtual world

27. Canon★ 7 · dormant · Python

    Python implementation of Club Penguin's proprietary minigame compression

28. RevEmu★ 7 · dormant · C#

    Habbo Hotel emulator for the flash protocol (r63 post-shuffle)

29. toontown-otp★ 7 · dormant · Python

    OTP server for the 2003 historical version of Toontown Online

30. cppy★ 6 · archived · Python

    Club Penguin server emulator for AS3 clients, written in Python on Twisted

31. Comet★ 5 · archived · Java

    Habbo Hotel server emulator written in Java

32. mystic★ 5 · dormant · Python

    Club Penguin private server in Python 3

33. Kitsune★ 4 · dormant · PHP

    Club Penguin private server in PHP

34. libotp-movement★ 4 · archived · Python

    Reverse-engineered libotp movement modules for Toontown Online

35. libtoontown-pets★ 4 · archived · Python

    Reverse-engineered libtoontown pets modules for Toontown Online

36. roxstar★ 4 · active · JavaScript

    Server emulation for Moshi Monsters

37. Localbox★ 3 · slowing · TypeScript

    TypeScript server emulator for Box Critters by RocketSnail Games

38. Snowbull★ 3 · dormant

    Club Penguin private server in C#