Outstanding classic from Pixel, updated for the Wii.
Fans of Metroid and similar games will likely enjoy this the most, but if you're still not sold, do yourself a favor and go download the PC version. It's free, and just about *any* machine out there can handle it. If you like what you see, then do Pixel a favor and purchase the Wii version, so that maybe someday we'll see more greatness from him.
(Just a side note, the "time spent playing" is at least how much time I've logged on the PC version over the years, including replays. In other words, a *very* high replay value for something so simple.)