Separate names with a comma.
Probably server issue Their servers are probably acting up, and when it doesn't get a response to you trying a name it just says you can't use it.
Sheesh Believe it or not, even 'in its day' the vast, VAST majority of people playing it did not know enough about C to go code spelunking and...
Nice... but... I saw the post title and thought, 'ooh, I've been needing a little art for my game... I wonder how much it would cost to get some...