Not too long ago, Jeff Atwood lowered the overall productivity of software developers everywhere when he wrote about Desktop Tower Defense, a game that he calls fiendishly addictive. I chose not to play the game as I had too much going on. But now I have family visiting and my brother (Hey Brian!) introduced me to yet another fiendishly addictive flash game, Line Rider. Damn you brother! It’s not even really a game in the sense that there’s no objective other than to build really cool courses. It’s quite similar to a physics drawing tool. You simply start drawing lines...