From Youtube
Basically Tomb Raider 1 but with a few add-ons, notably climbable walls, shallow water, ziplines and outdoor levels with visible sky. You can drive boats in the Venice level and skidoos/snowmobiles in the Tibet level.
FROM Wikipedia
Tomb Raider is a 1996 action-adventure game developed by Core Design and published by Eidos Interactive as the debut entry in the Tomb Raider media franchise. It was first released on the Sega Saturn, followed shortly by versions for MS-DOS and the PlayStation.