There are two types of rolls players will typically make during a SURGE! adventure: Challenges and Contested Rolls.
Challenges are rolled against a pre-determined value, based on the Difficulty Rating (DR). If the player rolling a Challenge meets or exceeds the value of the DR, then the attempt succeeds.
*Key for definitions below: Difficulty Rating Name = Success Value
Easy = 5
Moderate = 10
Difficult = 15
Extremely Difficult = 35
Legendary Difficulty = 50
Example: If the GM says "OK, you can try to pick that lock. Make me a Mechanical Skill Challenge roll, the DR is Moderate", then the player must roll a 10 (based on the values defined above in this wiki) or greater to successful pick the lock in question.