The roll ability was added to Lara's move set, so Lara can now roll in the water and in the middle of a somersault.
After performing a handstand, on a random chance, Lara will sometimes wobble for a second before she stands upright again. This move was only previously seen in the Sega Saturn version of the original game.
Tomb Raider 2
In 'Offshore Rig', there are some computer screens that show a running frame animation of Lara, some dates as well as a message to fans from the developers, telling them that they listened to their requests for remasters.
The unreachable medipack in 'Temple of Xian' is now reachable as the developers have made the ladder climbable.
Tomb Raider 3
Additional moves were added to Lara's move set, including moves from 'Tomb Raider: The Last Revelation' and 'Tomb Raider Chronicles'. These new moves include a crawl-roll, sprint to crawl, and crawlspace roll.
A cutscene that was only seen in a beta version of the game was added in. It is seen at the start of the level 'High Security Compound'.
Miscellaneous
Various fans helped to create the Remastered games. They are mentioned in the credits and one even has their name on the door of Lara's cold storage in her kitchen.
The expansions do not allow for a New Game+ experience.