So the 30 cent deal this month on the Wii U is for Kirby's Adventure for the NES. I never played this one so I picked it up. I've tried a lot of Kirby games over the years and been disappointed because they were just too short and too easy. Each time I try another thinking "this will be different" but alas they all kind of suck due to their child-like difficulty level.
Anyway, I'm sure a lot of people missed out on this game. It was released in 1993 on the NES and at this point the SNES had already been out for two years in the US and Japan. While I still wouldn't call the game difficult, there are a lot of stages and varied enemies and there is a slight degree of challenge as well. It's filled with mini games, secret items, and all the things you'd find in a typical Mario game of that era, it's just Kirby, so it's a little easier.
Regardless it's only 30 cents... pick it up and have fun!