The date is on the first post y'all 
This is based on A movie, the third one,
How is Leo able to do all of this genetic engineering in this era? Honestly, he has no idea what he's doing, he is just learning as he goes, he gets an idea, like looking at the blood of a lycan and he makes a 'microscope' type device to do so. I don't know he's the smart one not me :D
The date can be changed however, if y'all want to do something in the steampunk era, which I've never played...or really understood....,that's alright with me