The only info that they provide is that this mod was made with the game's open source PC port, so you won't be able to adventure around Hyrule with Pikmin yourself. Still, notCHase's channel is ...

For example, Red Pikmin can be seen surviving in the hottest parts of Death Mountain while all the others perish from the heat, and in another shot, most Pikmin drown in water, but Blue Pikmin get ...