Tbh i can't choose an all time fav game of my life, but i could make a list from the past and present.

Childhood: NFS U2, Carbon, MW2005, Prince of Persia the Two Thrones, 1NSANE, FIFA 07

Teen-Present: GTA V(even tho i don't really play it anymore for what it became), sometimes the anual FIFA game, PUBG, CSGO, Rocket League, R6S, The Division, Dishonored 1 and 2, Bioshock 1-2-Infinite(god how much i love this one), all the AC games tbh, all the batman arkham games, metro 2033, metro last light and the upcoming exodus. This list could go on and on. For 2019 i'm looking forward for 3 specific games: Metro Exodus, The Division 2(put more than 250 hours in the first one, really looking forward for this one) and Anthem (GOD I REALLY HOPE EA doesn't screw this one up. 6 years in the making of this game and i really hope it will be a succes.) Bare in mind i'm not comparing Anthem with Destiny 2 like everybody does and i'm also not saying it is any kind of rip-off even tho we've seen a lot of games exo-suits and robotic stuff, this one seems unique somehow.