Talk:Adamantite Sword/@comment-187.127.185.178-20120124172736/@comment-4769514-20120124182541

Yeah, the game uploads as a whole so you can pretty much do that. Old maps can support some new features (that are not included in MapGen) and old characters well, can do anything new ones can. So yes, you can even break Demon Altars from a 1.0 map, IF you have Terraria uploaded.