Re: SteamBitShop.com ● Easily buy any Steam game with bitcoin
I am a bit on the fence about "Invisible Inc.", if you have a good price I may give it a go. 
It's $11.5 during the sale:https://steambitshop.com/?page=request&search=Invisible%252C+Inc.
Delivery might take longer than usual since I'm away from my PC right now.