After I copy & paste the .n-gage file in the n-gage folder in the memory card...,then ill open the n-gage application ,then it will start to install the game..while installing it shows that "File is corrupted.Delete now?"....Where as if I download the n-gage game form internet through n-gage application it will get installed but it will be a trial version......
please help me guys I'm not able to install the game......

I have seen a post here, something like n-gage fix. Before that, let's start first with the possible cause of your problem. Nokia 5320 supports FP2 already. BINPDA so far has ******* n-gage app and games for pre-FP1 and FP1 phones only. So, your phone is not yet supported by hacked games. However, as I've said, check some posts here. I've seen that n-gage fix where n-gage games can work already on FP2 phones like yours. Hope this helps you.