i just got the samsung gravity t from tmobile a couple days ago. it comes with 4 preloaded games. the games are pac man, millionare 2010, guitar hero 5 mobile, bubble bash 2, and bejewled demo. i was wondering if i have only a certain amount of trials on the games until i have to buy them or i can only play until a certain level and dont have to buy them. if i play and then dont buy the game, does that mean i can never play the game again? PLEASE HELP!!!!!!!!