Abstract: The present invention provides a testing system, apparatus and program for efficiently testing VLT games and other games before they are installed. The present invention uses input elements, pay lines and pay table information to generate test cases for each permutation of element combinations. Once the test cases are generated, pay line wins and credit amounts for each test case can be determined. Each of the generated test cases can include a key that can be used with the actual game code to determine if the results generated by the key in the actual game match the results that were determined during testing.