Last time I played Mothership my PC intentionally detonated a small(ish) nuclear device on his own position. Only two members of the party managed to clear the primary blast radius before it went off.
I listened to an actual play podcast where they played Mothership. I have deluxe edition and have skimmed it. I think the rules are pretty good. I'd love to play it sometime. Add it to the list of games I have but haven't played.