Welcome to the wonderful world of Lego!
This game is a 3D strategy game, made of Lego. The keyword of this game: drilling.
You will have to drill through the different types of walls, deal with air limitations, lava overflow, and more.
You should go and start the game with the training missions, they're annoying but they help a lot.
You will work with 3 materials in your adventure:
These little stones are used in building construction and in building and vehicles upgrades.
Commonly abbreviated as ECs, these little green crystals are used in construction, Vehicle summon, Buildings power, and Laser (even though it's very much a waste).
See Lego Rock Raiders/Buildings#Ore Refinery for more details about Building Studs.