Battlestation Harbinger has all that it needs to be the perfect time-kill that you'll install on your iOS or Android device. While I still love the PC version, I have to say that I'm left hungry for more story!
A little bit of Homeworld 101. The next time your friends start squinting when you try to explain them the basics of Homeworld, and why this game is the best ever, just share this content with them. Problem solved.