Talk:Nth Metal (Tier)/@comment-2600:1005:B025:14C2:7434:9132:C6F4:3505-20190731210639/@comment-69.85.225.197-20190822125448

If by "free" you mean without spending real money, you can enter survivor mode and spin the wheel and hope it lands on some. Otherwise you'll have to wait for a Phantom Zone event and beat the challenges and bosses to earn some.