One of the beauties of the Scum system is that it is extremely easy to customize to provide exactly the type of game the group wants.
...
Unless otherwise noted, these rules are applicable to both Dungeon Scum and Starport Scum, though you may find a particular option more suitable to one or the other.
—description from the rulebook
The Variant Rules Pack provides a collection of new options for your games of both Starport Scum and Dungeon Scum, ranging from the exceptionally simple to the more involved.
Inside, you will find 17 variant rules, covering everything from making the game more or less deadly, more options for sneaking around the battle, outflanking enemies, new initiative options and rules for first aid and dodging in combat.
As a bonus you also get a gnarly table for determining the effects of a Gruesome Death result.
—description from the publisher
These expansion rules require one or both of the base games. They provide rule-by-rule options and variants. Each variant rule essentially is modular, and players can pick-and-choose which options to use.
—user summary