It's bringing back lots of memories looking through the XGenStudios catalog [1]. I remember playing Motherload when I was in middle school, around the time it was released (2005). It was a neat game, but was really difficult, with games lasting multiple days, a couple hours per day.

I replayed it a couple years ago and was done in about 3 hours. I see they have Super Motherload, released in 2013. I may have to check it out.

[1] http://www.xgenstudios.com/games/