Undying Dusk is a video game in a PDF format, with a gameplay based on exploration and logic puzzles, in the tradition of dungeon crawlers. Featuring: * ~ 200 000 PDF pages * retro aesthetics: 160x120 resolution & a 16 colors palette * grid-based world with 50+ distinct tiles & 10 maps to explore * more than 30 treasure items, weapons & spells to pick up in order to face 15 enemy monsters * 20 music tracks * thousands of "Game Over" pages, and a single path to victory * 4 hidden secrets & a concealed epilogue * an online hall of fame This is the very first video game in a PDF format.