It is really very easy to create a simple quiz game in EFS:
You don't need any filters or triggers for the evaluation of your quit game! All you need is the scoring function that EFS comes with as standard.
Start with creating all quiz questions and answer options. When you've done this, press the Scoring-Button in your Questionnaire editor. The "Scoring-Window" opens.
Select the question which you want to evaluate. You see all answer items of your question. You can now weight them 1 for "right answer" and 0 for "wrong answer". Repeat this for all quiz questions. The scoring variables are labelled with s_000x. For a simple quiz you only need 1 variable (s_0001)
A correct answer will automatically increase the variable by 1. You can display the number of correct answers e.g. on the last page by unsing a wildcard #s_0001#.