This game is similar in style to the Quake genre games. The aim being to collect keys and beat the boss from each level before being able to move on.
Navigation is done via a central hub.
Once all the keys for a level are in place a slip-gate for the same is opened and Turok can proceed. It's not all one way though, Turok can come and go between each of the levels where the keys are in place via this hub. If you ever needed a game to put your Nintendo 64 and Sony Playstation mates in their places, this is it. The graphics are absolutely gob-smacking. Their is plenty of detail and the transparency effects are put to fantastic use.