what is your fave Markiplier series

ive been watching mark for ever five nights at f*ck boys BUUUT hes so busy recently and he's like the only youtuber i watch religiously all the other youtubers i watch are once a month posters anyway what is YOUR fave series he's done i just found out he played rdr2 so i got something new to watch but i need more i must be fueled i would prefer solo (ive watched every Collab like 1milion times) but i also want to hear your faves regardless