Few casual games have been copied as often as Zuma, and Frogtastic Marble Adventure is one of the copies that is worth your time. A stone frog sits in the middle of the screen, a chain of colored marbles crawls along a winding track toward a hole, and your only job is to stop it before it gets there.
Aim with the mouse and click to fire the marble the frog is holding. When it lands next to marbles of its own color and makes a group of three or more, they pop and the gap closes. If the two halves of the broken chain match in color, they snap back together and pop again, and that is how the big combos happen. Bonus marbles hide in the chain too: some slow it down, others speed up the explosions.
Clear every marble and you move on to the next stage; let one roll into the hole and the round is over. Fans of the original will also find Zuma Deluxe and Zuma 2 on this site.