What if I want to translate system messages from Gamepedia wikifamily? Some system messages not exist at Translate Wiki. Can I add this messages to Translate Wiki, or I need to add this as New Project? Or maybe best way is translate system message locally, for example I already translated System Messages at Terraria Wiki into Russian. But this messages displayed only in Russian Terraria Wiki. What if I want see translated messages in another wikis, for example in Minecraft Wiki. What I need to do?
Thanks for asking! I'd love supporting gamepedia wikis more. Some of these messages belong to MediaWiki core, hence just by translating at Special:Translate/core you will see your translations reach all Gamepedia wikis when they update.
Gamepedia is on 1.23, which was released one year ago: at this speed, you'd need to wait about one year for your translations to reach all wikis. However, you can ask the system administrators to install and run mw:Extension:LocalisationUpdate: as soon as they do that, all the translations you make here will spread to all the Gamepedia wikis. Translations you make on your own wiki are trapped there and can't be easily exported.
Additionally, I see Gamepedia has several custom extensions; I don't know whether you translated some of those too. To translate them efficiently, you should ask the Gamepedia developers to host their code in gerrit.wikimedia.org.
I will be speaking with our development team here at Gamepedia to see if we can move our repositories to MediaWiki's Gerrit system. Currently all the maintained extensions are hosted on GitHub.
Is it mean that in future all system messages can be translated this, at Translate Wiki, and this messages can be work with all websites of Gamepedia?
Alexia, any updates? If needed we can now sync with GitHub repositories as well (but you will need to give push permissions to @siebrand and @nikerabbit).
Contact them on Gamepedia wikis and/or involve other Gamepedia users.