If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Be the villian instead of the hero, siege instead of defend, and take over the world, one kingdom at a time. Rather than building towers and defending against hordes of monsters, you are given the reigns of an evil mage that builds his army from the ground up to dominate the lands. You must unlock new units, learn new spells, and think up unique summoning strategies to overcome the defenses of your foes
Mouse - Navigate.
1-9 - Summon units / cast spells.
Spacebar / Numpad 0 - Summon unit queue / Slow / Fast forward time.