A great, simple, yet intriguingly fun game with an entertaining narrative component (rarely seen in some of the more simple games). Technically a very well crafted game, with a specific objective to keep things simple and fun, also boasts a very cool classic/retro Japanese style - both for the simply animated characters, the sound effects, and the music. It's not angry birds, but it is a great game.
Additionally, the developer, Brian DeWeese (http://briandeweese.wordpress.com), is a really cool guy who deserves your $0.99 for the crazy good game he's pushed out in record time; so, take a look and give Memory Fu your support.