Andrew Plotkin is a video game developer that created Glk and Glulx, created the text adventures Advent Door, Bigger Than You Think, A Change in the Weather, Cold Iron, Cragne Manor, Delightful Wallpaper, Donkey Kong, The Dreamhold, Dual Transform, Hadean Lands, Hoist Sail for the Heliopause and Home, Hunter, in Darkness, Icebreaker: The Text Adventure, Inhumane, Lists and Lists, Logic Puzzle Sampler, Ombre, Praser 5, Sensory Jam, Shade, So Far, The Space Under the Window, and Spider And Web, and converted Tetris to the Z-machine text adventure engine as Freefall.