None of the ingame tutorials or the information here described how to even play the game properly
So: You are a disembodied voyeuristic poltergeist trapped in a seriously light deficient goblin cave.
You can move around with WASD and mouse, Q or E to rise and sink, tab to switch between slower and faster floating.
You can also warp to the locations in the cave with numbers 1 to 6.
Note this deposits your camera in shitty angles near the ceiling, you have to look around to orient yourself and actually see the room contents.
Each location technically serves a purpose, but in reality you only need the shop (6) and the breeding area (1 or 2).
The goal of the game is to breed stronger goblins and raid harder targets, which yield better slaves for better breeding.
Each Raid destination gets harder after each successful raid.
You start with a single weak goblin available and a bunch of gold.
The shop sells either women or goblins with a 12 hour swap rotation. (So every 24 hours there is new slaves)
Middle mouse button on shop NPC allows to buy, same button on your goblins or slaves (or their icons) allows you to sell.
The clock, your money and time controls are on the top left. Also your population.
The bottom right has your hotbar (very important and completely undocumented).
The bottom right also has icons for the core game menus: Raiding (shortcut r) and your population overview (the humanoid).
The population overview is split into slaves and goblins, giving an overview. Clicking a NPC and pressing F gives more info.
IMPORTANT: You can drag and drop the NPC icons into your hotbar.
Then you can drag and drop NPC from the hotbar to cave locations, a small green dot shows up when you hover while holding an NPC over a destination. Dropping a goblin and a slave on a slab in the breeding area gets them raping.
You should press F on the slave and click the "A" button on the top of the popup to set them to automatic mode.
This will automatically put them in the birthing area when pregnant, and back on the breeding slab after delivery.
Pregnancies are very fast, just ingame hours. The newborn goblin is a child for a few ingame hours, then he becomes a new adult goblin.
Breeding creates new goblins. A child takes the stats of its father gobbo and the bonus a slave gives its children.
This is repeatable: If a slave gives +1 attack, the child of a 1 attack goblin will have 2. If that child breeds its mother, the resulting child will have 3. And so on. Slaves only survive a set amount of pregnancies.
The raid menu (R) allows you to send goblins to attack targets. Targets have different difficulty levels, and you need stronger goblins to defeat harder targets. Goblins are unavailable for breeding while on a raid. A raid can kill goblins.
A successful raid returns the surviving goblins and new slaves. Note goblins have to move to a target and back, so the bar must fill twice.
You may have to open the raid log (shortcut L) to retrieve your spoils.
While near a busy breeding slab, you can click the cog icon in the bottom left and untoggle the "auto" option to gain control over the animations.
There is 2 sets: Goblin and pigman/abomination
Quick strategy:
Upon starting a new game, jump to the shop (6) and check all available slaves. You ideally want one for raising each stat.
Buy accordingly. Then either wait 12 ingame hours for the goblin sale (but they suck) or start your evolution.
As a child takes all stats from its father (+mother), there is no gain breeding anything other than your best goblin at all times.
Breed your starter goblin with a slave. Wait for the child. Sell the starter goblin and breed the gen1 child. Wait for gen2 child. Sell gen1 child. Repeat. If you have the stats to raid a location successfully, you can breed your stat horse with multiple slaves to get a small army and spares, so you dont lose everything if the raid goes poorly.
It could be advantageous to sell slaves rather than using them up completely. Every 24 hours the shop will have new slaves.