ZYNGA'S ad-free version of Zombie Swipeout (http://itunes.apple.com/us/app/zombie-swipeout/id513355394?mt=8) does just that, and only that--removes ads from the gameplay--for $0.99. The game features great graphics and engrossing gameplay. Sounds good so far. But there's a HUGE CATCH. Gameplay is limited, nay, crippled, even in the $0.99 PAID version. Basically, I can tell you that you get to you play for about 7 or 8 minutes before a timer shows you that you have to "recharge." This "recharging" takes ABOUT 8 MINUTES! Of course, you can skip the wait by paying coins, which, as I said, are not an unlimited resource. Sure, once you pay the $0.99 for the "ad-free" version you get a somewhat generous amounts of these coins. But, under light to medium game-play, these coins will soon drop down to 0 (oh, in about a week or so). WHILE PLAYING DOES EARN YOU MORE COINS, IT HAPPENS AT A VERY, VERY SLOW PLACE. Again, this is Zynga trying to get you to make an in-app purchase (i.e. real money). There's yet another money-making mechanism (for Zynga) at work in this game. If you accidentally slash a human and you want to keep on playing, you can "rewind"--for a hefty price: you have to use a "rescue," and you get about 25 of those only AFTER upgrading to the $0.99 version. ZYNGA's Words With Friends, Hanging With Friends, and Scramble with Friend work just fine without the in-app purchases of "Suspect Letters," "Extinguish Incorrect Tiles," and "Revive." All of these "perks" help you play a little better, but it's entirely possible to play 24/7 nonstop without buying them with virtual coins, coins are bought with REAL CASH. If you get ZOMBIE SWIPEOUT by Zynga, then I guarantee that you will eventually be playing it for about 10 minutes at a time, before having to wait 8 minutes to refuel. Unless you start making in-app purchases to continue playing. This is very similar to the arcade games of yesteryear, where your ship would die, and you had to pay $0.25 to continue playing. That was fair enough, as you were not buying the arcade machine itself. But it you BUY A GAME from the App Store, you should be able to play it 24/7 if you should want to. Zynga is the worst when it comes to this. Zynga's Zombie Swipeout wants to make money for the company in three different ways: (1) Revenue from ads if you get the free version (2) You run out of energy for playing for roughly 8-10 minutes--even AFTER you buy the paid version, encouraging you to spend more money on the game for "coins" to avoid the 8-minute wait while your character "recharges" (3) In order to continue gameplay right where you left off after accidentally slicing up a human instead of a zombie, you have to use a "rescue." You only get 25 opportunities to do this (AFTER you pay the $1 to get the ad-free version. More rescues are available, I'm sure, for--you guessed it--real cash.) Zynga has no scruples. Had I know that even after paying $0.99 for the app, after playing for roughly ten minutes, I'd still be forced to wait while my character "recharges" for 8 minutes, I never would have bought the app!