For an underwater adventure game, the graphics in this 20,000 Leagues game leaves much to be desired. It simply isn't attractive enough to catch any player's attention. I wouldn't have played it either if not for some free spins to try it out some years back, plus playing this game in one of the freeroll tournaments. One day, whilst playing another game at one particular casino, I came across this game again, and decided to give it another try, more like to refresh my memory on the game than anything else.
That odd looking yellow submarine is the Wild symbol, appearing only on reels 1, 2, 4 and 5, and substitutes for other symbols except for the '20000 Leagues' symbol. This is another example of a totally dumb Wild symbol that doesn't pay for itself, it doesn't double any wins, nor does it become stacked or expanded. Very disappointing indeed. The logo '20000 Leagues' is a special Wild symbol that appears only on reel 3, but is no different from the Submarine Wild symbol in being very dumb. There aren't any Scatters in this game, losing even more chances of making additional wins, but a Free Spins game can be triggered whenever a Submarine appears with the '20000 Leagues'. Each appearing submarine awards 10 free spins, with all wins doubled, and more free spins can be retriggered.
As far as I have played this game, I have only gotten 1 submarine with that 20000 Leagues symbol, for 10 free spins. Have never got 2 or more submarines to trigger 20 or more free spins, which was frustrating. However, retriggering of the Free Spins game do happen quite often, giving 20 free spins in total , or sometimes 30, but I've never gotten more than that. As for the symbols in the game, the Captain pays 5000x, the Diver pays 2000x, the Shark pays 1000x and the rest pay from 1000x down to 150x, all per line bet for 5 of each kind. A low paytable.
Playing this game was more frustrating than exciting, due to the dumb Wilds not doing anything except to substitute for symbols. The 10 free spins with a 2x multiplier was way below the usual standard of 20 or more free spins. The retriggers do occur at times, but the extra spins were always non productive enough and hardly contributing to extra win amounts. My best win so far was only 51x my bet amount, which is far from being satisfactory, and I don't think I'll ever play this game again, not ever.