Your biggest wow moment of each gen you've lived through

[DonFerrari]

Genesis/Mega Drive - Altered Beast... I had played for some time on Atari, so having a game where I could hit, jump and super powers was fantastic (was around 6-7y)
Playstation - Final Fantasy IX I was dazzed by the opening CGI and still love the game to this day. The jump from the carton games I played on Genesis to FF IX (like I bought it late in the gen and was almosts unaware of PS existence until few moths before). Also Gran Turismo, its simulation of racing was much superior to arcades that I played it endlesly, and still my favorite series to this day together with FF probably (was 15y). Tony Hawks also deserve note with Syphon Filter and Soul Reaver (story was great for me) and RE it was so great and terrifying to play a survival horror (I really liked the scare jumps from Alien 3 on Genesis)
PS2 - Hard to be sure but would be between FF X-2 and LotR as first impression was great, but DMC3 had me playing non-stop and was so adctive and dynamic. Tekken 5 and their target to have body fur and pores was something that had me gasping.
PS3 - Uncharted for sure. I wasn't much into shooting games before, but the adventure aspect was so great that it became a favorite within hours of play (have platined it 8 times, 2 for the original trilogy, UC4 and LL, think I need to play Golden Abyss) and God of War that I had ignored the previous gen was a fantastic Hack and Slash that I fell in love (platined all the available on PS3 and also GoW on Give me God of War difficulty on PS4)., Heavy Rain for the image quality and multiple choices.
PS4 - To many have left me happy and smilling, but GoW was breathtaking. If talking something I haven't played before I would say Until Dawn with it almost direct film play.