I have played Prototype functioning games of all three at shows and although the games are very different in gameplay if you want my opinion of the most fun that I enjoyed is in the following order. I rank Houdini First as far as game play, modern features and depth. It appeared very well designed and that Jersey Jack quality feel and modernness to it. Plus seems like a very good start-up company that has/will have less drama around manufacturing and support. Right behind that is TNA. At the shows it had the longest lines of recent memory to play and is a very different gameplay that the other LCD newer games and a winner in its own right. Plus the Spooky manufacturing is solid and you know you will get support. Not sure of the longevity of it holding value and if you really get the most bang for your buck but it is a great game. Alien looks great I was not sucked into the gameplay and at the last show had short lines or no lines to play it. I know there has been a lot of manufacturing drama and support around it so it ranks third in my opinion but still is the BEST Themed game of them all.

Houdini (By Far)
TNA
Alien