FC3 was the first to make drug trips part of story progression (leaving a little leeway for FC2’s malaria bouts). FC4 had a lot of “spiritual” events. FC5 played a lot with Bliss trips. I’m wrapping up FC6 now and was just saying “man, where are all the hallucinatory story arcs?”. Then I did the Oluso mission (panther amigo) and felt at home for a minute. It didn’t last long, but I guess the reward is bringing back a little supernatural power to the game, late in the campaign.