In few shorts words: I just fisnished "Tripwire" for "Traveller" from Mongoose. "Beltsrike" have something in common with it - a HUGE amount of adventure ideas. Not only to be used with "Traveller" (this part is very well done), but also with almost every other system. Some ideas can be transformed in fullblooded "Lone Wolf" or "Rune Quest" adventures. Don't believe? Just read it. And add a little imagination.