Might have missed some things... lol!
Veloren is an open-source voxel rpg. You can create a character and explore a generated map. You can kill mobs, friendly and enemy, to acquire items and loot. You can explore caves and fight monsters to get diamonds, gold, silver, and much more. You can also explore dungeons to battle the toughest of bosses and unlock new loot. You can craft and upgrade your characters gear. When you level up, you can level up your skill tree and get better at various skills.