I've been playing Dead trigger. I like it so far, but the IAP's get on my nerves. No, I don't want to pay $5 for a health pack and $30 for a shotgun.
I'm currently playing FIFA 14 as well. I only had to spend about $4 to unlock manager mode and other stuff as well. I don't mind paying $4 as long as it's a one time fee. This game has IAPs as well, but you don't need to spend more money to enjoy the game.
The worst offender was Sims FreePlay. Everything happens in real time. Want you Sim to watch a movie? Well that's going to take 2 hours. LOL... Who wants to sit around for 2 hours waiting for your Sim to finish watching a movie. You can speed things up, but you need Life Points and they can be expensive. They did this deliberately. They want you to buy Simoleons and Life Points. They understand people and how we operate. People are impatient, and when we become impatient we are going to make bad decisions. I was one of those people. I wanted to enjoy the game, so I must of spent $10 on LP. Finally, I had enough and uninstalled the game. Pity because I thought it was a good game.