I've been trying to change my EXP level in Summer Break: https://play.google.com/store/apps/details?id=com.ntt.summer.ball.puzzle&hl=en (made with Unity)
I have not been able to find any of the useful values in this game. Not by specific search, nor via fuzzy search. I am quite a noob when it comes to Game Guardian, but have been successful in some other games.
Whether the 1XP per broken block is increased, the 50XP per watched ad (after breaking the star), or increasing the level instantly – that's all fine by me.