Onslaught is another tower defense game. What makes this one different is the graphics, the multiple maps, and the combos. But there's no sound, which is disappointing.The blue tower is a basic projectile tower. The green tower shoots lasers (at a fairly good rate once it's upgraded). And the red tower shoots missiles over a long range. The red tower won't be as fast, but it does a lot of damage. The blue tower doesn't have a lot of range, but it will fire faster. It's only when you put in the combos when this game differentiates itself.
Line up your three towers so that when their damage is fully upgraded, you can take advantage of their combinations. From BFGs, landmines, poison (which slows the enemy) shots to nukes, you can find lots of combos to make this game fun. My only real issue with this game is the combos that you want are pretty hard to set up.
Or, you can go for a laser tower chain (which I find pretty boring, but it does work).
I also like the tips that come up. They make a lot of sense. You should also really read up on the combos on the how to play page.
Play Onslaught at playr.co.uk.
Update: This game is still being developed, so each time you play it, you may find different combos work better.
At the moment, you can do very well with several poison combos scattered around the board. After getting slowed to a standstill, the waves of creeps are hit by nukes using a flower arrangement.
The poison combo is set up using a red, blue, green. Extend the range of the red tower to make sure it's the first one to fire. The nuke flower arrangement goes like this. Set a red tower in the middle of six or more blue towers. The red tower (once you extend the range to guarantee it fires first) will throw out a nuke for every two blue towers within range in short order.
See the top right of the inset image to get an idea of what I mean. I have eight blue towers surrounding a red tower that has maximum range. I also surrounded it with damage upgrades. That way I can send out four nukes in quick succession.
