I Have No Mouth, and I Must Scream is a full version adventure game developed by Cyberdreams for Windows. Based on Harlan Ellison's short story of the same name, this game takes you on a journey of psychological warfare and emotional turmoil. The game consists of five different characters, each with their unique environment and challenging dilemmas.

The game's provocative psychological and adult-oriented themes make it a challenging and compelling experience. The game features digitized speech with over 40 different characters and state-of-the-art animation. Harlan Ellison, the author of the original short story, voices the insane master computer, AM.

The game's bonus content includes "The Making of I Have No Mouth, and I Must Scream" and a full 54-track soundtrack composed by legendary composer John Ottman. This game is released under the GNU GPL v2 and uses ScummVM across Windows, Mac, and Linux.

Overall, I Have No Mouth, and I Must Scream is a disturbing and unforgettable adventure that delves into the darkest fears of its five characters. It challenges players to outwit the master computer AM and confront their own emotions and beliefs.