Play it immediately. Few games have aged this gracefully.

What specific aspect of the game or feature would you like to know more about?

You don’t have to stick with .wbfs forever. Here are common conversions:

stands for Wii Backup File System . It is a proprietary, sparse file system designed by the Wii homebrew community to store Wii game images on USB drives. Unlike an ISO (which is always a fixed size, e.g., 4.7GB), a WBFS file strips out:

As they neared the heart of the fortress, they encountered the file "Super Mario Galaxy 2 -SB4E01-.wbfs" stored on a sleek, high-tech server. However, to their surprise, the file had been encrypted, and a puzzle guarded access to its contents.

: Native hardware via disc or the Wii U eShop (now discontinued).