From the Steam page:
Thomas Was Alone is an indie minimalist 2D platformer about friendship and jumping and floating and anti-gravity. Guide a group of rectangles through a series of obstacles, using their different skills together to get to the end of each environment.
Listen to awesome music by David Housden. Jump over rectangles meticulously placed by Mike Bithell. Listen to voiceover read wistfully and a bit amusingly by Danny Wallace.
Thomas Was Alone tells the story of the world’s first sentient AIs, and how they worked together to, well, not escape: Escape is a strong word. ‘Emerge’ might be better. ‘Emerge’ has an air of importance about it, while keeping the myriad plot twists and superhero origin stories you’ll discover under wraps. We didn’t even mention the bouncing. That’d be overkill.
If you haven’t already checked out Thomas Was Alone, and you enjoy minimalistic, refined gameplay with some pretty sweet (and rather atmospheric) abstract art, definitely take a look. The best part of Thomas Was Alone, however, is the story–and if you’re a sucker for a good story and some fantastic narration, you’ll like this one for sure. Thomas Was Alone is a platformer where your only abilities are the staples of the genre: moving and jumping. But along the way, the story of the simple rectangles that represent the game’s characters becomes increasingly clear, until you can’t help but see them as much more than their four sides.