Among all the games in Free Slots For Fun, the Achilles slot is one of my favorites. It has two free spins, one of which is fairly fair, getting 10 free spins at 2x, but it's the second one for me.
If you get 3 wild "Achilles" symbols anywhere in the field of view, you can choose a symbol and get 10, 15 or 20 free games (usually 15), using a 3x multiplier. Wildness is actually scattered. Although the dispersion itself does not pay the price, their regularity suddenly appears to be enough to make some of Achilles' great victories very feasible.