A fun way to learn a bit of history about Liberty Stn., a former Naval Training Cntr in San Diego. Play any date/time. - Once you've purchased your game, you can use it any date or time. I purchased my game with airline miles to keep them active. It's the second one we've played with Questo, the other one was in Balboa Park, also in San Diego. HOW DOES IT WORK? Download the Questo app, log in, find your game and click 'play'. It tells you your starting point, finishing point and the number of places you will explore by playing. The app then steps you through a historic story and gives you directions to each destination (on foot). Once you get to the destination, you're given a 'riddle' or a 'challenge' and you enter the answer to the riddle/challenge on the app. The app is timing you and giving you points as you go. Challenges are things like finding a certain color in a mosaic on a wall or a certain number on a building. HINTS If you're stuck, there are hints. We used hints for maybe 4 of the challenges -- even when we got the answer to those ones after the hint, we thought those challenges were a bit obscure and would never have guessed them without the hints. This is my main reason for not giving 5 stars. MAKE IT AS COMPETITIVE AS YOU LIKE For us it was a bit of fun, it got us out in the sunshine for a bit of exercise and we weren't bothered about being competitive and making it high on the leaderboard. We took our time, took photographs, explored things, read historic signs, etc. as we went along. As locals, we've been to Liberty Station many times, but still learnt things about it. AFTER THE GAME We arrived at Liberty Station early on a Sunday to get good parking and avoid the summer heat. After the game, you can hang out at Liberty Station, eat, walk along the water, play frisbee, check out the shops, cafes, galleries and food hall, etc. FUN FOR ALL This is a fun activity for a date, couples, teens or families. Go for it! Parking is free in several lots and on several streets around Liberty Station. If you found this review useful, please click the 'like' button.