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Mudlet 4.7 – Here come the MIB

Mudlet has regularly brought forward new standards towards the decades long standing art of text games, and will continue to do so with this release as well. We also have a few improvements and information for special groups of users.

Mud Information Broadcasts

Thanks to demonnic, games can now send short information bits to their players at any time, next to the regular text flow. While this has been possible with the GMCP standard for quite some time, those messages would mostly stay under the surface, and need to be handled by coders and UI packages alike.

This new MIB standard however will be displayed directly to players in their known Mudlet window and style. This can be used as an easy starter GUI for new games, but also allows additional types of content to be shown to users.

Sounds interesting? Check out the docs on how to get started.

Text gaming with younger players

As more and more new players are trying text games, we have received reports from concerned parents about some rather dark games out there. Therefore, to protect our young players, all new versions of Mudlet will come with an explicit profanity filter enabled from the start.

The filter will remove or replace a list of vulgar words and phrases from these games. We won’t go into details here. You know what we mean. Disabling the filter will not be a simple check box in preferences either, as children may still find these too easily. Instead, you will receive the secret code in our Mudlet Discord after a simple age check by using the command !code I am over 18 years old.

Simplified Languages

This month, the Chinese translation of Mudlet has received their golden star  as it approached 100% completion. Meanwhile, there is still some work to do on the Chinese variant used in Taiwan, Hong Kong, etc. As all this political detail may be too confusing to foreigners, these languages are simply called “Chinese (Traditional)” and “Chinese (Simplified)” in the Mudlet language selector.

Mudlet continues to gain more and more international users due to the ongoing translation work. We will now also simplify away the histories of European colonization of the Americas by renaming British and (US) American English as well as Brasilian Portuguese languages in a same manner as just “Traditional” and “Simplified” respectively.

Attention on Summer Time changes (Daylight Saving Time, DST)

Due to a recently discovered issue with our autosaving code we recommend that anyone playing during a Summer Time change such that the wall-clock time goes backwards relative to UTC does not end a session for the amount of time of the switch – otherwise they risk a save made with the new time being ignored in favour of an older one with an apparently newer time. Thanks to SlySven for noticing this and working on resolving the issue as soon as possible.

Are you still on Mudlet 4.5.1?

Does your Mudlet say Mudlet on top? Go to to update it by installing a new version. Don’t worry – your profiles will stay.

You can find more information on this in our detailed blog post.


Thanks to all coders: commandore420, demonnic, Edna, Freddy, keneanung, meetorlov, Razor, shagwell, SlySven, syd, and vadi2 who made this release possible!

Thanks to all translators: Ghandi69, Leris, Marco “M0lid3us” Tironi (wiploo), Vadim Peretokin (vperetokin), vingi, and Ömer Albulak (albulak) for translating Mudlet into their own language.



  • Often requested wait() functionality is now in Mudlet API
  • Atari ST was added to the list of supported platforms
  • You may now use Mudlet as a client for folding@home research
  • Enter cheat mode by entering a special key sequence
  • Added a combat AI system. Please don’t leave it unattended


  • Mudlet’s energy consumption reduced to help fight climate change
  • Scripts will now error if not formatted properly (right click – format all)
  • Future-proofed Mudlet for use on quantum processors
  • Turbo mode feature can now be activated easily by holding Alt while pressing F4 key
  • Magical portals allow Mudlet users to play with negative latency
  • Automatic script formatting will now minify code as well
  • Comic Sans is the new default font for new profiles
  • Adjusted magic smoke algorithm for better crypto farming


  • Fixed a crash when player pressed the konami code
  • Return nil+error if Garthok not successfully gnarfled
  • Fixed accidentally sending login names and passwords to 4chan
  • Limited packets to one every six feet of cable (approx. – YMMV)


  • Mudlet TLS now uses only military grade Dual_EC_DRBG as the single cypher
  • Games can now download the game data to the local machine to improve responsiveness and limit bandwidth usage

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