The document discusses existing video games that are similar to the author's idea for a new game, including Terraria, Temple Run, Super Mario Bros., and Sonic the Hedgehog. Common features across these games are their use of bright colors, side-scrolling gameplay, pixel art style, sound effects, and background music. The author analyzes what aspects of these existing games they will include in their own work, such as colors, props, gameplay, and audio elements.