A fantastic game that all will love.
You are Sigma. Sigma is a college student who was abducted and forced to play the Nonary Game: Ambidex Edition. You soon learn that 8 other people are trapped here along with you, these 8 other people are very ranged personalities, and each have their own story to tell.
A computer AI named Zero III tells you that you are forced to play the AB game. Where you must chose to ally or betray, both teams ally and they both get 2 points, one allies and the other betrays, the betrayer gets 3 and other loses 2 points, if you get 0 points you die and 9 you can escape.
You also go into "escape rooms" where you must solve puzzles to escape, the difficultly of these puzzles vary, some being extremely easy, while others being quite difficult.
You also travel from different timelines, and are forced to see what happens if you betrayed that person instead of allying with them. And everything is explained, including game mechanics such as solving puzzles and timeline travel, and leaves you no questions.