New Super Mario Bros 2 has gotten its last two downloadable content course packs, each with a distinct focus on satisfying fans looking for a challenge. The "Mystery Adventures" pack and the "Impossible" packs are available for $2.50 each, and both add three new courses to the Coin Rush mode.
The "Mystery Adventures" pack courses focus on exploration, hiding secrets in little nooks and crannies throughout the stages. This way, you'll have to play through multiple times to find the ideal run and increase your score. The "Impossible" pack is pure Mario sadism, with no power-ups in any of the courses and multiple death traps on all sides. Your coin count is calculated by how much time you have remaining, if you can finish the courses at all.