https://ldjam.com/events/ludum-dare/39/mothership-1

This game is the one that I like the most for now. The game play is so simple: create and control spaceships to protect your mothership. This simplicity makes it easy to understand and offer so much tactical possibilities. What is also a good point is that this game offers so much possibilities of improvement that this simply makes it a very good game with a huge potential. Just try it by yourself!