As the name of the game implies, this Double Stacks game can double-up the top 4 symbols to create a screenful of same doubled symbols, for some impressive payouts - well, that's what the paytable says anyway, but that's another story, because when I looked at the paytable, I wasn't impressed at all! For a 10-paylines game, the win values for all the symbols are actually very low, if not extremely low, so most of the time, you can only expect to get disappointingly poor payouts, except on a very few and rare lucky occasions!
A Free Spins Game is one of the most important feature of any game, as far as I am concerned. In Double Stacks, 3 non-paying Scatter symbols would award 5 free spins, without any win multiplier...yep, only 5 blardy free spins with a zero multiplier! Argh! There isn't any retriggering possibility, but getting 2, 3, 4 or 5 Scatters during a free spin would add 2, 5, 15 or 30 more free spins. Yeah right...try getting any of the extra Scatters during the initial 5 free spins and you would see how difficult everything really is!
Oh, before I forget, this game also offers 4 Jackpot Prizes, one for each of the top 4 symbols, from 100x up to 1000x the total bet amount. Getting all of the same symbols on the reels would award the corresponding jackpot prize. Impressive? Nope, not to me it isn't! Games like Book Of Dead, just for example, can pay 100x the total bet for getting all of the lowest symbol, whilst the top symbol can pay 5000x, so what is 1000x, right? Sorry NetEnt, but you cannot simply fool everyone!