Algodoo

I created My tower defense, tower and spikes.
There are 4 tower types
Gun - No specials
Machine Gun - Fast rate of fire
Range Gun - Large range will fire
Accelerating Gun - Faster bullet

There are 1 special types
Spike Trap - High damage (Show or hide every 2 - 0.45 secs)

There are 5 enemy types
Red - No Special
Dark Red And gray - Additional Health
Light Red - Additional Speed
Red with Shield - 3 lived shield
Very dark red - Boss, Super Very high Health (Such as spikes, Spikes are high damage)

TIP: All towers has 8 way lasers (Without Angry & Acking)

UPDATE:

*New enemy: Always Shielded