Widelands
This real-time strategic building game (Open Source) can be played both as single player and multi-player. It’s not dissimilar to Settlers but much more complex.
The basic idea is that you are the chieftain of a small tribe and you must build a settlement. Your people work to gather resources and… what could possibly go wrong? 😉
You can get the game here and if you pick Gàidhlig during the installation, that’s it:
If you missed that, just open the Options:
Pick Gàidhlig:
Apply that and off you go.