Action games that will play on 3GS

Hi there! I'm a blind iPhone user of 3GS model by helping with voiceover. Today I installed on my iphone a very exciting and fun game called Where's my rubber ducky. (it's a zombies games). I really like this type of games and would very very like to get more someone else. It can be action, maybe race maybe fight etc. Thats many lots of games based as Where's my rubber ducky you know. There's some games just was made for iphone 4 that don't working for 3gs and I want that I also could play it. I mean flip it gyro, aurify etc etc. My biggest wishion is to getting action realited and so. I want to also say that I'm just using game apps for free if it's could be possible to continue it. Thanks!! /Haydar