I finally got out my Alien Battles and gave it several playthroughs. It like something I had always wondered about "What if you could play MTG with Aliens" and it kind of works out that way. It was enjoyable once I figured out the rules and style of play type of stuff. There were multiple questions I had to ask about online because coming from a MTG background some things were similar and came natural and others were almost the exact opposite.
The suggested deck is ok for your first game but I would definitely build something specific for your main character after that. Even without buying any more cards you can still put something together that is more in line with the abilities of the main character that you choose. The only thing that made it seem a little stale at times was the lack of plot twists that made it just feel like "drop a character and fight" each turn. Coming from MTG there are multiple other types of cards that bring other stuff to the table so its not just creatures all the time. It looks like the predator set has more plot twists and I suppose you could check out the other comic sets to spice it up if you don't sacrificing the theme a little bit.
If anybody plays the Predator Battles let me know how it goes. I will probably get it at some point down the road. I am just glad that these franchises are getting some other cool games besides video games. After the failed CCG back in the day I wouldn't have thought there would be two Legendary games, two VS games, and even Yahtzee and Clue!