Despite having elaborate bonus features, the Legends Battle for Earth base game is pretty straightforward. It takes place on a 6x5 grid with 20 ways to win. Heroes or allies pay whenever you see them two times in view, but you must see three matching royals to strike a prize.
The pay table is:
Wilds pay x100 for 6 appearances
Yellow Hero: x50, x16, x4, x2, x0.4
Orange Hero: x30, x12, x3, x1.5, x0.3
Green Hero: x20, x8, x2, x1, x0.2
Blue Hero: x16, x6.4, x1.6, x0.8, x0.1
Purple hero: x12, x4.8, x1.2, x0.6, x0.1
A: x10, x4, x1, x0.5
K: x8, x3.2, x0.8, x0.4
Q: x6, x2.4, x0.6, x0.3
J: x4, x1.6, x0.4, x0.2
10: x3, x1.2, x0.3, x0.2