Dwarf Fortress!

>Helpful beginner material, it's fucking free, why not try it out?:

>http://df.magmawiki.com/ - Wiki for all your dwarfly needs, down to every last mineral.

>www.youtube.com/51ppycup - Great tutorial/LP. Hugely entertaining, and very informative, highly recommended for someone wanting to get into Dwarf Fortress.

>http://www.youtube.com/watch?v=yn1iW1QN7_s - A PURELY educational video, provides little entertainment but really gets you sorted with the mechanics and how to play Dwarf Fortress as soon as possible. Most people watch this over 51ppycup, but it really depends on your personal preference.

>http://www.youtube.com/playlist?list=PL57C3E6F6FA52B85B - New tutorial in the making. Recommended as it's the newest version.

>Lazy Newb Pack (http://www.bay12forums.com/smf/index.php?topic=59026.0) - Dwarf Fortress packaged with a plethora of utilities such as SoundSense (adds a sound engine to Dwarf Fortress), DwarfTherapist (an essential in assigning roles and managing dwarves) as well as all 3 of the big tilesets (Phoebus, Mayday and Ironhand) installed. HIGHLY RECOMMENDED for a first download.

Strike the earth!