A really fun game! I made the mistake to tab out of the game after a few minutes, making the game unplayable by losing mouse capture, but it had me hooked and I didn't mind starting over again :D This also gave me the chance to read the intro again, as I missed parts of it because it goes too fast for me. Would have liked a "press to continue" for the text more.
Cool mechanics with exploring and seeking invisible animals with their audio cues and making them work for me!
And also... of course pigs produce fuel, everybody knows that!