Bioshock is the spiritual successor to two of the greatest videogames ever made, System Shock and System Shock 2. I rarely solve games, and while I don’t think Bioshock really lived up to its heritage, I did play it through to the end and agree with the generally positive reviews it got. This weekend Valve is offering it for only $15 over on Steampowered. If you like atmospheric shooters with some light RPG elements and great plots, there’s nothing else like it on the market and it’s definitely worth playing through. For $15 it’s a steal.