In the very beginning, there was only one man, who was turned into a Super Soldier through a one-off experimentation that could no longer be performed on others, because the creator of that successful experiment was then murdered by villains. So there can only be one Super Soldier, and by donning the colours of his country, he becomes the Super Soldier known as Captain America, the only real super hero with his own super-human strengths, unlike any other Super Heroes whose powers depended on some other things. Ah well, so much for the incredible info on Captain America. I still like Ironman the best, what with his numerous flying armoured suits, and with his incomparable super artificial assistant, Just-Another-Rather-Very-Intelligent-System, or JARVIS for short. With JARVIS, Ironman could rule the world, if he wants to! But that's another story, one which Thor or Odin would never want to hear about, hahaha.
Both Captain America and the Villain are Wild symbols, both double all wins with them, and both pay 5000x the line bet for 5 of them. There are no Scatters in this game, but free spins can be won by getting Captain America on reel 1, a FreeSpins symbol on reel 3, and the Villain on reel 5, activating the Super Energy Free Games feature. This feature starts off with 4 free spins in hand, then you need to pick up to nine more items from a selection screen to win more free spins, multipliers, retriggers, Expanding Wilds and a special Hero & Villain Super Spins feature. Now that is a lot of extras that anyone could ever ask for in any Free Spins game! Get all of them and see your jaw drop to the floor as the game pays! Woowee!
All the other extra features need not be elaborated further, as we are all familiar with them, except for the Hero & Villain Super Spins feature. Only 2 Super spins are given, each spin having 1 Expanded Wild reel and one Extra Wild, all randomly placed on the reels. This 2 Super Spins alone can pay big at the right time, quite often giving 5-of-a-kind wins. This is one item I would like never to miss out from my pickings of the items, but sadly enough, it isn't so, and it isn't easy to get at all! For the other symbols, 5-of-a-kinds of each symbol pays from 2000x down to 40x the line bet. Paytable wise, it's very good, but not the best.
I've had some good wins on this Captain America game, but my best was only 215x my total bet, a few of above 100x, and many more wins of under 100x my total bet. I haven't yet seen any win that exceeded the 1000x total bet amount, but I have no doubt at all that those kinds of huge wins are indeed possible. Only time and luck can tell.