This game was running on my 15 (YES FIFTEEN) years old laptop!!! Until Steam ended Win 7 support.
Support this single developer cause they're doing AMAZING job on the game on updating it and it's one of the very few games that I completely go for and they're worth the full price or even more - gift it to Your friends. This game is awesome and I'd love the dev to continue working on it and providing more content.
If You think it's AC's ripoff (I thought that at first) - It's actually not - the more stuff the game is getting it's completely something new and original!

........old review........
I ABSOLUTELY LOVE THIS GAME
I could say a few words about things I don't like... but hey! it's EARLY ACCESS.
Got this one full price and it was worth it :) Happy Anniversary and hope for more of those ;)