This is the development repository of multiple projects by members of the OpenTTD Community as well as friends of #openttdcoop, please refer to the separate project pages for further details.

Unless stated differently, all projects here are licensed under GPL-2.0+.
Projects generally must have a free license. See our policy here .


public IRC channel: #openttdcoop.devzone (Webchat)

Instructions for getting started with development, getting used to tools and DevZone interfaces, see the DevZone wiki


Latest news

NewGRF Meta Language: NML 0.4.2 released
NML 0.4.2 is released and contains next to the support for more than 64 industries and important fix which ensures reproducable compilation by enforcing reproducable sorting of language strings
Added by planetmaker about 1 year ago

NewGRF Meta Language: NML 0.4.1 released
Maintenance release which (hopefully) makes packaging possible again
Added by planetmaker over 1 year ago

OpenGFX: OpenGFX 0.5.2
Maintenance release with additional spirtes to support OpenTTD 1.5.0
Added by planetmaker over 1 year ago

DevZone Help Center: Activation of retention policy
Added by Spike almost 2 years ago

NewGRF Meta Language: NML 0.4.0 released
NML 0.4.0 is released. It requires python3.2+ now and offers improved NewGRF support and gains much speed by using caching for sprite encodings
Added by planetmaker almost 2 years ago

View all news

Latest projects

  • Narrow gauge 600mm (2016-11-06 11:21)

    This add-on set offers narrow gauge steam locomotives and rolling stock similar to these featured by
    HEQS set, although with train, not tram functionality.
    Additional low-speed cheap 600mm track type is provided, compatible with these tiny locomotives....

  • Unsinkable Sam (2016-08-31 06:42)

    Ship Cats

  • Tropic Refurbishment Set Extender (2016-08-14 09:11)
  • American Train Pack (2016-06-29 17:37)
  • BRTrains (2016-04-09 15:26)

    BRTrains is a set with only real-life liveries, (no Company Colours, sorry), spanning all eras of the British Railway history.
    Graphics are drawn from UKRS (with Pikkabird's Permission) and BROS. All coding by Leanden.