How do I use a .bsg file?

planes

uploaded by 4546 1 week ago


control:
Up : Y
Down : H
Roll left : J
Roll right : G
advanced: M
back: N
skins: http://besiegedownloads.com/machine/56352
posted by 4546 1 week ago
paste in: besiege/Besiege_Data/SavedMachines
posted by ADBOst 1 week ago
wait a minite
isnt that
posted by 4546 1 week ago
???