A dice game of luck and strategy, race against the computer (or a friend) to 10,000 points. Earn points by rolling 1's and 5's, or by rolling 3 or more of a kind, or several other special configurations worth big points. Also known under a variety of different names, Zilch is definitely one of those games that's "easy to learn, hard to master."

As with other tower defense games, you earn cash by obliterating the attackers that creep their way around any one of several maps available to play. With the cash you can purchase additional turrets or upgrade existing ones. But it is the Combos in Onslaught 2 that add a level of depth to this tower defense game not present in other games like it. The combinations are many, and the resulting strategy becomes deep.