Unhack
Team up with your AI partner, Weedy, and take on the 5K Worm rampaging across cyberspace. Unhack is a short but unique blend of visual novel and puzzle game that features an interesting story and great voice acting. Although it only has ten levels that can be completed in an hour if you are good, it is definitely fun while it lasts and worth trying out if you can find it for cheap.
Gameplay: The game is short but sweet.
Graphics: The visuals could be better, but they are serviceable enough.
Sound: The soundtrack is good, and so is the voice acting