1. Water is the most important resource. And guns.
Water is the game's currency.
2. Where is that water stored? Not in barrels, barrels have a completely different use.
Barrels serve as cover in the field but have no other uses.
3. How about crates? No, crates are for guns, and other types of utilities, such as guns.
4. The type of container you mostly get water from is a sack, obviously.
5. Shoes and body armor take space (they're stored crates, duh), headwear does not
Loot is found in two types of items: Swag Bags, which look like burlap sacks with a reverse dollar sign on them, and Epic Swag, which is a crate with a star on it. Swag Bags mostly contain water (Gallons) while Epic Swag is always an item. Items can be weapons or utilities, but some utilities (such as the Scrapper Sidearm) can also be guns.
Each character has four equipment slots: Weapon, two utilities, and headwear. Hats are only decorative and they don't consume valuable team inventory space.
6. Everything starts off with a big bang
The intro of the game starts with the Earth exploding to pieces.
7. You're technically pirates, although cowboys is quite close too
8. More specifically, space pirates/cowboys
9. Also robots
Your team is a group of steambot space pirates, but usually they refer to themselves as cowbots due to the series' western flavor.
10. If you think about it, you're robots powered by money, but really you just use all the money you find to buy guns, utilities, and crates.
Your guys are steambots, ostensibly powered by steam (and thus water). None of the water you collect is needed as fuel, it can be used to buy stuff. One of the more expensive and useful things to buy is extra inventory space, seemingly just big boxes that go... somewhere and give you extra space for your guns and things.
11. There are other types of bots that are not powered by money, though
12. Some of the other bots are dieselpunks
The second-tier baddies are diesel-powered royalists.
13. This game is (hopefully) the first one in a series, but the franchise also contains a handful of other games in different genres - two metroidvanias and an rpg
SteamWorld Dig 1 and 2, and SteamWorld Quest are also a part of the franchise. There have been some rumors about Heist 2, too.
14. Get in, grab the loot, and get out.
15. Shooting the baddies is necessary to keep them from shooting you, but otherwise it offers no rewards (aside from the occasional hat)
In many levels, enemies keep respawning, but there's no reason to kill them.
16. No digging is required this time around.
A reference to SteamWorld Dig
