Bought a Groupon for Lost Canada for six people. I ended up showing up with 8 people and they gave us the Groupon price for the additional 2 people, which was nice. Called the night before to find out what the most popular/challenging room was and a girl told me that "Return of the Nemesis", so we reserved this room. When we got there and spoke with the people who worked there, we found out that it wasn't actually the best room that they had. I had done 3 previous escape games so I had some expectations going in.
When we got there, there were small games and a hoverboard for people to use while they waited. These were very entertaining, and would turn out to be the most fun part of our experience. Only 1 of the 3 staff working that night were friendly and chatted us up.
Return of the Nemesis review: The rooms were small and bare, and the decor was quite low-budget. Because the rooms were so small, 8 people was way too many people (and was probably a fire hazard). It constituted of one puzzle per room, each of which required you to find a numeric code to enter into a keypad to unlock the door to the next room. The puzzles weren't very fun and the final door was broken which took away from the whole "escape" concept, because we had to come out where we came in from. Afterwards, all my friends were underwhelmed, even the first-timers. But we had a Groupon so I guess you get what you pay for. I still feel like it was a waste of time and money.
if you're looking for a real escape game with multiple rooms, sophisticated decor/technology, and fun, varied. and challenging puzzles, I would recommend Omescape or Escape Games Canada.