Bonuses...
	Boosts...
	Positioning...
	Restore energy...
	Upgrades...

Connect with Facebook to get extra gold and items, including missiles that are very helpful in destroying enemy ships.

Select the "Other" category in the store. The Experience Crystal Lvl 1 costs only 510 coins and results in 8,800 experience points. You can purchase specific equipment at the store if you have enough Crystals or can take advantage of any Packages you might have active.

Keep your ship at the bottom of the screen, except when avoiding incoming fire. Continuously swipe to the left and right to shoot the incoming ships.

After running out of energy, advance the time on your device to restore it. Afterwards, set the time back to its correct value.

Upgrade your Armor first, as it is difficult to replace and is very useful. Then, work on your weapons and ship. After maxing out your weapons and ship, you can Advance them if the required materials are available.