I remember downloading Badminton League last winter because I was bored and too lazy to go out and play some real badminton. As unhealthy as my reasoning may be, the choice was a good one because this is the middle of summer and I still play it when I'm bored.
The game play is pretty straight forward, requiring you to move your player forward or backward to deal with the depth of the opponent's shots. Your options for a shot include either going long or short, and the shots are meant to trouble your opponent depending on the timing. You can hit a smash if your opponent's timing is off and the shuttlecock loops up. It takes a while to get the hang of hitting a smash but once you learn it, it's pretty fun to see your two dimensional opponent stand motionless as defeat flies past them. The game offers in app purchases to increase your player's abilities so you can play tougher opponents. Opponents can include online players as well as friends over a Bluetooth or LAN connection.
Badminton League is a solid app that'll help you stay up in the middle of an extremely boring bus ride from Uttara to Motijheel. It's uncomplicated and fun, and sometimes that's exactly what you need.