Please provide more details as to

1) What is the Objective of your testing ? (Portability , Functionality , etc ...)
2) Which Platform is the game developed on ?(Ex Java)
3) Which Mobile Phones is your game expected to be installed and played ?
4) What is the Game Play , Scoring scheme and Instructions etc ?

This is will give us a start point to help.

You may also want to consider using a mobiforge.com/emulators/page/mobile-emulators

You can use the emulator here - developer.palm.com/index.php?option=com_...=article&id=1744

Further , go over the documentation (if any ) to go develop the test plan . Even if not the GUI testing should not be much difficult. Test what you see on screen and document the same.

Regarding performance will get back to you

Please care to reveal more details as to where you are working , what kind of project you are on , who is the client , what is the deadline ... yada yada in sum what ever comes to your mind.

We do not want to provide half-baked solution with limited information that is provided.