This year I have completed my physical collection of Assassin's Creed games. It includes all main games and spin-offs, in total there are 20 games spanning 6 platforms. I always dreamt about buying all games, but I wanted them to be first-hand games, and the DS and PSP spin-offs were a bit overpriced. I finally bought them for less than 60€ each, completing my collection 😁.
I have obtained 100% synchronization in all of them, including all their DLCs (the RPG trilogy games no longer have a DNA synchronization menu, but I have completed all quests and cleared all zones). The hardest ones to beat were Brotherhood, Revelations and AC II: Discovery. These games introduced optional objectives, but did not have the option to reload a checkpoint, so you had to restart the memories from the beginning (damn you bomber and tank missions).
My favourite games are Brotherhood, Revelations and Unity. I hope that physical games do not eventually die, I might be old-schooled, but I like the feeling of having my games on a shelf.