I remember browsing the CryDev forums in 2012 and coming across this interesting thread.
I was amazed by the level of detail put into the environments and the character animations. It quickly found itself on my radar and I frequently checked for updates.
When I heard about the transition to Unity, I was initially disappointed. At the time, I had believed Unity wasn't capable of pushing highly sophisticated visuals, especially when compared to CryEngine 3. This view of mine quickly changed as I saw what Seith was pulling off in Unity. Not only had he retained the incredible charm and atmosphere, but he was able to work at a much better pace with the new engine.
Then there was the IndieGoGo campaign, and we all know how that turned out!

So, once again, what (and where) was your first impression of GoaT?