No. Its 100% free, and if you have Xbox live, you can customize maps with your friends.
if you mean in forge, then no.
You don't. Money in Halo 3 Forge is set to the map limit.
No, halo 3 forge is not offline, you may play it online with friends or others.
no
No
go to the main menu and select forge
Search Forge in google there is a forge program for your computer!
yes there is
Yes, there will be Forge mode in Halo 3: ODST... but on the other hand there is two discs so there might not be in the halo ODST disc.:)
No but if you are looking for a great map to forge on then I would suggest that you would go on sand trap but the only halo that has forge world is halo reach hope this helped thank you.
you cant
You can't