Zak McKracken and the Alien Mindbenders

The Good
The story was hilarious. This game will make you laugh -- guaranteed.

The adventure part is well done, too. It is somewhat like a RPG, in the sense that it is a bit non-linear and that there are multiple solutions or workarounds to puzzles (i.e. you can either pay your phone bill or use the computer to fix it).

The Bad
If you're not careful, you can get yourself into an unwinable state. And you'd never know, because you can keep on playing forever. So save your game!

The Bottom Line
Under-rated and almost totally forgotten, but I guarantee you'll like it.