Leveling Up
For every 3 hours in a session (min 1) with a DM you get 1 level bubble, it takes 10 level bubbles to level your character. It does not matter what level you are. All characters regardless of level, gain a level after getting their 10 level bubble.
Catch Up System
Once each week players can can claim a single reward bonus of +2 XP bubbles or 200 GP. This must be announced to the DM at the end of the session.