FYI, Star Wars Force Collection came out.. it's "free"-mium.
I can tell you the game is most certainly NOT free if you want to actually play against others. Any 4-5 star character (starting out) will stomp on a regular 3 star, even if that 3 star is leveled pretty high. For example, my 3 star Vader, level 30 outta 40, gets trashed by a starter Fett or Anakin Skywalker.
I used some of my game card money to buy the 'starter' set for the deal and the remainder to buy a 6 pack of cards. Not a SINGLE card over 3 stars. I don't even bother fighting 4-5 star people. It's insane how OP it is. There ARE rewards for gold and silver packs that SAY they have the chance for a rare character... I'm not so sure. I've unlocked most of them. The best card I got (twice) was a 3 star Padme in disguise. The 1-2 stars are useless.
It's also VERY expensive. The "levelling" consists of tapping on baddies until your "energy" runs out. Then wait for it to spawn again.
You collect vehicle cards, and you can get 6 to make a vehicle. Collecting multiple sets adds a level per set. You can battle other players to complete missing sets. Right NOW, vehicle battles are free (for another 20+ hrs). Then they'll be 4 BP a piece (you can store up to 10).
Player battles are all auto-resolved. Nothing you can do once your team is made can affect the outcome of the battle.