Here is an interesting move by Gameloft regarding one of their racing games. While it was available on their own store for $4.99, they have released GT Racing Motor Academy for free on the Android Market but with in-game purchases available instead of charging you for the game.
Essentially this makes GT Racing Motor Academy a freemium game from Gameloft now. It is still the full game that you may have already purchased for $4.99 but using in-app purchases you have the option to unlock everything and get bonus XP.
Of course this option to buy and unlock everything is just that, an option. If you actually want to play the game through you can easily earn all the stuff you would be unlocking over time. Of course if you are impatient or don't mind dropping a couple of bucks to get a head start then this is great news. These are being called Free+ games or so the label from Gameloft says. You can pick up GT Motor Racing Academy right now off the Android Market for free, if your device is supported that is.
Developer Website: Gameloft
Android Market Link: GT Motor Racing Academy