Jet
Suitable picks for POP event (Jan-Feb-March):
I’m a completionist. I would like to play games from SG first.
Short game list from SG (priority):
https://www.backlog-assassins.net/lists/lor8egl
Medium game list from SG (priority):
https://www.backlog-assassins.net/lists/drkpvpl
Long game list from SG (priority):
https://www.backlog-assassins.net/lists/b3woxwd
Very long list from SG (priority):
https://www.backlog-assassins.net/lists/lx2gwmb
Otherwise, you may pick any from my steam library.
Hollow Knight meets two of your criterion. Just sayin’.
According to the HLTB page of Hollow Knight:
Main Story: 27.0 hrs
Main Story and Extras: 41.7 hrs
Completionist: 64.4 hrs
So, it falls into “very long” (>25hrs) category.
Also, I’ve asked the admin about time categorization. I’ll edit the lists (if required) after their response.