Secrets: There are a total of 70 secrets in the game. (PC and Macintosh savegame files are available in case you make a bad save, want to skip a level, etc.)
However, PlayStation and Dreamcast players should note that, unlike the previous adventures, this game doesn't allow you to go back to previously played levels unless you have a saved game from that level. Saving Your Game: Unlimited saves on all platforms. TRLR also brings the triumphant return of the compass and the separate sidestep keys! (See the controls page for details.) These include the ability to combine items, new moves like rope climbing and swinging, and traversing around corners, plus the choice of automatic or limited manual targeting (no mouse or right analog stick support). There are also a few changes in the gameplay, inventory and combat systems. The levels are also less linear, and backtracking between them is required in some cases. The Last Revelation features more seamless gameplay, with shorter load times and smoother segues between levels. Lara herself is smoother and more fully textured, with no blocky joints or gaps in her polygons.
The overall look isn't radically different, but the scenery is well-crafted and highly detailed, and the designers have made good use of lighting effects and transparency. What's New Since TR3: While there are a variety of locations-indoors and outdoors, city streets, desert canyons and crumbling ruins-all the action takes place in Egypt.
