This is for DD who loves world building games like Roblox & Minecraft & has grown out of them. She currently plays on an iPad but wants a gaming laptop or PC. I want to try her out on our family laptop for now to see how she gets on - we’ve got a Dell. I was thinking I’d be able to buy a game to download like you do with X-Box or PlayStation but on Amazon it seems to be like you buy the physical game? Help! I have no idea what I’m doing!