Nintendo remade six stages from Super Mario Bros. and Super Mario Bros. 3 for New Super Mario Bros. 2. While World 1-1 from Super Mario Bros. is missing cheerful clouds, the gold rings and gold mushrooms are new. All of these stages are playable in Coin Rush mode where players try to collect as many coins as possible. Altogether, 300 billion coins have been collected in New Super Mario Bros. 2.
The Golden Classic Course Pack is a free download until January 31, 2013. It will still be available on February 1, 2013 as a 200 yen ($2.50) paid download.