This document discusses the design of an English language learning escape room game. It lists sources on game design and an approach to designing ELT escape room games, including setting learning objectives, developing a story, designing puzzles, and playtesting. It then provides an example narrative for a missing Mayan mask mystery and suggests follow-up activities like role plays and report writing. Finally, it addresses considerations for the game design like ensuring a balance between language learning outcomes, narrative coherence, and puzzle difficulty and engagement.