Download the PSX alpha demo 16 June 1997 1,55 Mo

Download the PC alpha demo 16 June 1997 (E3) 5,17 Mo

Below is a list of the different changes from the final version in the 3 levels contained in this alpha demo.

Bartoli's Hideout Deleted area.	Bartoli's Hideout Deleted area II.	Bartoli's Hideout Detonator key alpha.
Bartoli's Hideout Detonator key sprite alpha.	Bartoli's Hideout Different textures.	Bartoli's Hideout Inventory alpha.
Bartoli's Hideout Magnums holstered.	Bartoli's Hideout Magnums unholstered.	Bartoli's Hideout Mansion front alpha.
Bartoli's Hideout No fence.	Bartoli's Hideout No fence II.	Bartoli's Hideout No secret area.
Bartoli's Hideout No secret switch.	Bartoli's Hideout Shotgun holstered.	Bartoli's Hideout Shotgun unholstered.
Bartoli's Hideout Untriggered enemy.	Bartoli's Hideout Uzis holstered.	Bartoli's Hideout Uzis unholstered.
Bartoli's Hideout Uzis secret area alpha.	Bartoli's Hideout Windows alpha.	Wreck of the Maria Doria Shaft alpha.
Wreck of the Maria Doria Wetsuit alpha.	Catacombs of the Talion Boulders.	Catacombs of the Talion Ceiling.
Catacombs of the Talion First room.

Download the PC beta demo 21 September 1997 3,08 Mo

As this demo was compiled on the same day as the PSX version there is little difference between the two.
One difference is the absence of the inventory background despite the texture's presence in the level's file. It merely displays blackness in this PC demo.

Download the PSX beta demo 21 September 1997 2,08 Mo

The earliest version of Tomb Raider II's The Great Wall demo on PSX, of which a less common PC version was also released on this date.

The most notable difference in this version is the inventory background which uses a different texture. It resembles the red background seen on Tomb Raider II's box artwork used in the USA.
At the level's beginning, the camera angle is different as Lara slides into the clearing. Following this, the camera directs Lara's attention skyward but there is no helicopter.
Inside the depths of the second guardhouse, darts from the previous game are employed instead of the wall-mounted disk shooters. Darts do not appear anywhere in the final version.
The level ends following Lara's escape from the first pair of sliding spiked walls.

Download the PC beta demo 22 September 1997 3,07 Mo

Compiled a day later than the September 21st demo, this would appear to be identical.
Below is a list of the different changes from the final version in the level of this beta demo.

The Great Wall Darts.	The Great Wall Different camera angle.	The Great Wall Inventory beta.
The Great Wall No helicopter.

Download the PSX beta 30 September 1997 349 Mo

Below are some screenshots of the most obvious differences seen in this beta. More differences not listed here can be found in the game.

Main title It features a different background.	Lara's house The gate is missing (replaced by a door texture, there's no outside area), the sky is textured differently, the bushes are basic 2D models.	Lara's bedroom Another bed can be seen here.

Download the PSX prototype (on hiddenpalace.org) 15 October 1997

Download the PSX beta demo 16 October 1997 71,4 Mo

Download the PC beta demo 24 October 1997 3,34 Mo

Download the PC beta demo 30 October 1997 3,48 Mo

The most common version of Tomb Raider II's The Great Wall demo on PC.
Being compiled so close to the release date there are very few differences.
The inventory background uses the final texture but would appear a touch brighter than in the retail version. Also within the inventory, the tables are without any inner transparent areas.

Below is a screenshot of the inventory seen in this beta demo.

The Great Wall Beta inventory.

Download TRII The Golden Mask early developer version early levels, textures and developer files (on Tomb of Ash)

Download the Tomb Raider II 1997 N64 Technical Demo (on archive.org)