I'm building a game consisting of multiple worlds and I'd like to add in a bonus when the player collects all the coins in a given world?
Have 2 event observers on your game UI for each world. One that then takes you to a "bonus" level that you just have an action covering screen that user passes through to give you the bonus points. 1 event observer to take you to bonus level if X number of session coins met and.. 1 event observer to take you to next world bypassing the bonus scene. Let me know if that works for you.