considering the mods aspect, gotta go with Skyrim and Minecraft for my first two. (do i get multiple versions of the game? if i have to pick just one, i'd have to browse some mod lists to decide for minecraft). and maybe a Dance Dance Revolution arcade machine of some sort.
edit: dwarf fortress is also a strong contender as well
i just beat Spider-Man Remastered (2020) yesterday. It was pretty good! swinging around the city doesn't feel quite as good as Spider-Man 2 (2004), but the combat is a lot of fun, and the story and pacing was great. once i 100% it, i'll probably pick up the sequel when it's on sale.