# Introduction Experience points, or XP, are rewarded at the end of holds, fateful encounters, training opportunities, or chapters. Experience points are used to upgrade your faculties, senses, and talents. # Cost The experience cost of each upgrade is a multiplicative cost based on the level of the upgrade. Negative values and zero are calculated as if level 1. To upgrade a sense, the experience cost is 3\*(L), where L is the level being achieved. For example: going from a sense score of 3 to 4 is 12xp. A sense score cannot exceed twice the value of the corresponding faculty score. To upgrade a talent, the experience cost is 6\*(L), where L is the level being achieved. For example: going from a talent score of 3 to 4 is 24xp. To upgrade a faculty, the experience cost is 9\*(L), where L is the level being achieved. For example: going from a faculty score of 3 to 4 is 36xp.