Metal is a '[[BotB] major '[[battle] that typically occurs every year or so. Hence the name, entries in this battle are required to be metal or heavy rock.
'[#[Previous Battles]
There have been six Metal battles so far:

'[l[http://battleofthebits.com/arena/Battle/3891/Metal+6/[Metal 6] in 2018

'[l[http://battleofthebits.com/arena/Battle/3288/Metal+5/[Metal 5] in 2017

'[l[http://battleofthebits.com/arena/Battle/2688/Metal+IV+%3A+Doom+at+the+Door/[Metal IV : Doom at the Door] in 2015

'[l[http://battleofthebits.com/arena/Battle/2127/Metal+3+%3A+the+Strings+of+Blood/[Metal 3 : the Strings of Blood] in 2014

'[l[http://battleofthebits.com/arena/Battle/1593/Metal+II+%3A+Progocalypse/[Metal II : Progocalypse] in 2013

'[l[http://battleofthebits.com/arena/Battle/1351/Metal/[Metal] in 2013
'[#[See Also]
'[[Battle]