The original Prey contained a couple of neat ideas, namely the spirit walking and the use of portals. In the latest issue of PSM3 developer Human Head explains why portals have been dropped in Prey 2:
“We explored a lot of the ways you could use portals and gravity in combat, and I really wanted to shift away from making it too much of a puzzle game.
Portals and gravity were the functions of The Sphere [the mothership in the original game]. And The Sphere’s gone.”
The removal of the portal feature has annoyed quite a few gamers, and it also seems to contradict what has been previously mentioned. However, if the playable game is as intriguing as its teaser trailer then count me in.
Source: Beef Jack