Welcome to Onslaught!
The attackers are coming! They're trying to fight their way into Area 51 and it's up to you to build the defences and stop them getting in!
There's a cash bounty on the head of every attacker and each wave is tougher than the last. Use your earnings to upgrade your defences and keep the attackers at bay.
How do I defend my base?
By building weapons like these:
How can I make my defences stronger?
By upgrading your weapons or by using modifier turrets:
How do I use combo weapons?
By grouping together weapons and upgrading their damage to the max.