A moonquake has hardly damaged the lunar base, the oxygen drops dangerously fast. You have 20 minutes with your teammate to find a solution and save the mission. Choose to be on the lunar base or the mission control center and try to solve each puzzles with your teammate in the other room, in an augmented reality environnement. You will have to collaborate together in the aim to reestablish the communication and restart the life system of the lunar base. Our app is the world’s first escape game on the space theme using augmented reality technology. You will be immersed in a scientifically realistic space mission. Although Tranquility Base is a fictional experience, its scenario and puzzles are based on real science. Indeed you will meet current Swiss space research projects from ETH and EPFL labs. You will discover how a lunar base in 2050 might look like. Created by EPFL association Space at yourService, Tranquility Base aims to promote Swiss space sciences to the general public around the world.