Mausritter SRD · 2.3.1
Advancement
How to play > Advancement
Your mouse earns Experience Points (XP) by bringing treasure and useful goods back from places of danger to the safety of a mouse settlement.
For every pip-worth of treasure brought to safety (divided equally amongst the party), your mouse earns 1 XP.
Your mouse can earn additional XP by spending their pips selflessly on improvements for the whole community. For every 10 pips spent this way, your mouse earns 1 XP.