How to do a giveaway for a game that's not on the list?

If a game isn't on the giveaway list, it means it was given for free somewhere before. You can't give those games away here (you can try over at IndieGala though) ;)

Most games that don't show up in the giveaway list have been previously given away. If that's the case, then no, you wouldn't be able to do a giveaway for it here.

If it's a new game that hasn't been added to the list yet, you'd have to contact support to add it in.

Nope, if it was removed, it was probably free somewhere.

Alright, thanks for the information.