It's never too late for this kind of stuff.I feel so cheeky making a Halloween build on Christmas, lol.
Like darthmorf said, you can obtain a copy of Terraria for your PC through Steam or via GOG.com.QUESTION!!! I have always been a mobile terraria player, but I got a new computer. I have a HP windows 10, can I get terraria through steam on my new computer or in any other way?
This is the link for the Steam version*, and likewise for GOG.
(*requires Steam installation)