Rules overview
How to roll Mothership 1E dice
Roll d100 (00-99) against your skill value. Roll under to succeed. 00 is always a critical success and 99 always a critical failure, regardless of your skill. Any other doubles (11, 22, 33, and so on) are also criticals: doubles that beat your skill critically succeed, and doubles that don't critically fail. Advantage lets you roll twice and keep the better result; disadvantage keeps the worse.
Key mechanics
- d100 percentile roll-under
- Fixed 00/99 critical success/failure
- Doubles as criticals
- Panic checks (2d10 vs. Stress)
- Advantage & disadvantage
- Stress tracking
- Panic table reference