@amycgoodenough
Well Amy, first of all they both use Savage Worlds ruleset, which is a generic system intended for cinematic action in about any kind of setting. Here in Germany, many prefer it over other systems. You can buy both Pirates of the Spanish Main and Gaslight online in pdf form via drivethrurpg.
PotSM is a fantastic fun pirate-themed game. It gives you a plethora of easy to use rules for storms, carousing, ship-to-ship combat, boarding. I highly recommend the fanmade supplements found here: http://greywolf.critter.net/pirates.htm
I especially like the Cargo and Relic cards.
The game itself comes with maps of the Caribbean, with an easy to use grid, where you can track the travels of your parties crew. SaWo’s ruleset makes it easy to command your buccaneers and it doesn’t bog down. And if you want to give your players more creative control over the game you can hand out the Adventure Cards, which can influence the scenes you prepared for them.
The PotSM rules cover both real history as well as the “mythical” side of the time. If you want to fight the Kraken, there’s stats. If you want to encounter mermaids, there’s stats.
So basically you can make it real or mythical, just as you like. A great system and a great Setting. I currently have a crew running monthly (for which of course I am using Syrinscape extensively) on a Brigantine of English build in the year 1720, made up from a female german researcher, a male swedish whale hunter (different times), a female runaway african slave gone pirate and a male portuguese navigator. They got stranded together on the mythical island of Aeolus and encountered the rest of the wind cult that lived there, before a band of EITC mercs came and they escaped on their ship. Now they head to Malta to give the Maltese Falcon (a random loot drop from the cards I mentioned) back to the Knights of St. John of Malta
Gaslight uses the same system, but is set in victorian times. It too is mostly a historical setting, with the exception, that all the novels of the 19th century really happened in this world. Phileas Fogg did travel the world in 80 days, Sherlock Holmes and Doctor Watson did bring down Pr. Moriarty’s criminal empire, Abraham Van Helsing did end the terror of Count Dracula, Dr. Frankenstein did create a monster, Peter Pan abducts orphans, Ebenezer Scrooge did encounter three holiday-themed spirits, the earth is hollow, there’s dinosaurs still around on a distant plateau and there are rumors of strange sightings of submersible craft in the seas.
If you like any of these novels I alluded to this is a setting for you. Of course it spins some stories of what happened to those heroes: Van Helsing founded an institute to fight the supernatural, Mycroft Holmes is the head of british intelligence and so on.
You can combine it with elements from Deadlands Reloaded (not the story, but the specific rules for the setting) and can make wonderful adventures in the Old West with Greenhorns, who are tougher than they look.
Playable Races in this one include Humans, Vampires, Werewolves, Wildlings (think Peter Pan in the city) and Beastmen.