You need 3 or more scatters to trigger the free games which are with comic strips wilds. I got 8 free spins and I won only 17.60 the first time and nothing more the next time I triggered this feature.
Symbol on reel one and five triggers the alien attack bonus, but I guess I was not lucky to see the potential of this feature.
Symbol on the first reel triggers the alien weapon feature and from this feature I won 42 euros, but that was only one time thing. The gun shots and turns other symbols into wilds. Next time only one symbol was turned wild and I got only 2.70. Later did I find out that there is an arrow and numbers from one to four. When the arrow shows a given number the gun zaps and turns that number of symbols into wilds.
The graphics are a little plain on this 5 reels and 9 pay lines video slot game, but the sound effects are a nice addition to the slot. Some of the special symbols include aliens, a lady and a preacher. The Cowboys and Aliens logo is the wild and the spaceship is the scatter symbol. The reason why I like to play this slot is for the variety of features that it offers and the main reason is the 10 000 coin jackpot which I hope one day I will get if I manage to land five wilds.