Custom Wordpress Plugin: Quiz and Site-Wide Reward System

Dear all, I'm looking for a custom plugin to complement my Wordpress site. The plugin must have two main features (if it's better, you can divide these into two individual plugins): 1. Quiz/test. This will enable me to create and administer tests. I like the look and feel of [login to view URL], but I need more functionalities (e.g. create tests with time constraints) 2. Reward system - This will enable me to "gamify" my site. - I'm looking for a site-wide reward system, so it has to support/cover two plugins I already have: Buddypress and Sabai Discuss. - The plugin will enable my users to collect rewards for things they do on my site, such as: completing a test, answering others' questions, etcetera. - Rewards will be mainly in the form of virtual tokens and badges. Tokens can include: virtual cake, virtual flower, etc. - Rewards can be sponsored by companies. I also need a simple management system to keep track of this (who is sponsoring what, for how long, etc). - It has to provide some statistics so I can track user behaviors - Users can have a profile page to display all their tokens and badges. - The closest I could find to my ideal plugin is this: [login to view URL], however, I don't need some of its features and I need some other features that it doesn't have. Please ask me more questions if the above is not clear enough. Thank you! :)