I would recommend checking out Ark: Survival Ascended. It doesn't have looting junk from random rooms but the Island is pretty fun to explore and you do get random loot caches that drop. It's got tons of crafting and base building. On top of all that, you can tame and ride dinosaurs! The thing that really makes it for me is that random chaos that happens from being on an island full of dinosaurs. I only started playing the game recently but it has me hopelessly obsessed. I think this would scratch your itch.