The player character, an unnamed android, awakes in a serene environment. A disembodied voice calling itself Elohim instructs the android to explore the worlds he has created for it, and to solve the various puzzles to collect sigils, but warns it not to climb a tower at the centre of these worlds. As the android progresses, it becomes evident that these worlds exist only in virtual reality, and that it, like other androids it encounters, are separate artificial intelligence (AI) entities within a computer program. Some AIs it encounters act as Messengers, unquestioningly serving Elohim and guiding the android through the puzzles. Messages left by other AIs present varying views of the artificial worlds and of Elohim, with some stating that Elohim's words should be doubted, while the Milton Library Interface, a text conversation program found on various computer terminals, encourages the android to defy Elohim's commands.
The puzzles require the player to collect tetromino-shaped "sigils" by navigating enclosed areas and overcoming obstacles within them. These include computer-controlled drones that will detonate if they are too close to the player, killing them, and wall-mounted turrets that will shoot down the player if they get too close; if the player dies this way, they are reset to the start of the specific puzzle. Drones and turrets can be disabled using portable jammer units, which can also disable force-field walls that block the player's path. As the player collects sigils and completes more puzzles, new puzzle elements become available. Portable crystalline refractors allow the player to activate light-based switches. Boxes let the player climb to higher levels or to block the path of drones, among other factors, and large fans that can launch the player or other objects across the puzzle. Later, the player gains access to a device that can create a time recording of their actions, such that they can then interact with this recording to complete tasks, such as having the clone stand atop a switch to keep it activated for some time.
Source: Wikipedia, "The Talos Principle", available under the CC-BY-SA License.
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