Spanish fruit machines are all basically identical to this one here with the exception of each having different themes. Dozens and dozens of clones but basically a principle of you playing the bottom reels normally. Gain a win combination and either collect, gamble heads or tails 50/50 style, or exchange your win for spins to play on the top game.
The top game is a 5 winline jobby and can only be played by achieving 'Spins'. These come from exchanging wins as mentioned earlier, or you can land special symbols on the winline of the bottom game for single or random spins from 1 to 5. Depending on the symbol of course.
If you run out of money and you have spins remaining, the next player can nick the spins. This is because the spins on the top game cost a credit and cannot be played if the credits reaches zero.
Thats basically it but I'm sure theres a little more to them that I have failed to mention or have not been quite accurate. It was 9 months ago since I was last there and I didn't know the lingo likes.
Off again in 30 days so I'll maybe try to get some pics.
That's one of the machines I refer in another post. Yes, the fruit machines are like this, but have more things. In the lower game the prize are in order: 0,8;1,6;2,4;3,2;4;8;20;80. There are a "bonus" symbol, if you down that symbol to the winline you win a spin in the upper game, but if you down three in the winline you add six instead. In the upper game there are three symbols of a minor prize (4€) in a 5 line system, and three other symbols for the 20, 40 and 80€ Jackpots (20, 80 and 120 in the double game, of course). When you win more than a minor prize, that prizes add together. The major difference is that sometimes "randomly" when you get a single 4€
prize there are a third game (another machines have more than a third game). In the picture machine there are a roulette with prizes from 4 to 120 €. In other the prizes consist into multiply, or random select three prizes and get random one of the three.