Turmoil

The enemy ships in each tunnel have unique speeds, with faster ones worth more points. Sometimes, destroying an enemy ship will trigger a flashing orb at the end of the tunnel, allowing you to move down and recover it if grabbed quickly. Hesitating can result in a fast-moving missile that will destroy you.

When starting a game, you begin with five ships. If you complete all aliens in a level, you'll receive a bonus ship. You can hold up to six reserve ships at once. Losing a ship to an alien contact will leave you with fewer ships. There are nine levels, each with multiple waves that increase in speed and challenge.