Assassin's Creed 3 Remastered Save Game Location

Windows

Assassin's Creed 3 Remastered save games can be found on Windows here:

C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\savegames\[user_id]\5183\

Steam:

Assassin's Creed 3 Remastered save games installed through Steam can be found on Windows here:

C:\Users\[user_name]\Documents\Assassin’s Creed III Remaster\Saves

Linux

Assassin's Creed 3 Remastered save games can be found on Linux (Proton) here:

~/.steam/steam/userdata/[user_id]/911400