This is brilliant. Fun AND educational! At first, I was thinking..."Hmm, what's this about then?" Then I played it. I enjoyed the challenge to it! And then, to top it off, links to wiki pages about the science! Fantastic all around!
Way to fast to actually have any kind of strategy. You basically can't react fast enough to do anything other than just let the game scroll along. Decent enough concept for a simple game, but needs more (other than the speed adjustment).
Not to bad. Needs a bit more in the instructions to make it totally understandable, but if you play it a bit you can start to see the strategy to it. Need to work on the AI a slight bit more if possible.
Not to bad. Unlike TsarBomba here, I liked that you put in the questions to remember for later levels. You need to learn how to make it so you can't click and move through the walls (or right click too). Keep improving. One day you'll have a game that makes the weekly top list! :)
Need to do something about being able to pass through the walls. Might also want to give a moments pause after they click start so a person can get their hands on the keys. Perhaps also fill in the snake so it's easier to see. The color scheme choosen kinda hurts the eyes. Keep trying! You'll get a great game some day. :)
I like the game and it has great potential, but like everyone has said, you really need to look into balance issues. I've now made it that I can beat most any stage with 1 machine gun. Build up the speed bonus all the way first, then play the stages over again using less guns. Build the damage bonus. Then money bonus. Then Range bonus. Gets to the point that you can decimate everything with just 1 machine gun.
Further, it'd be nice to have a moment pause at the start of the game so you can actually set something up. As well, I also suggest displaying how much each upgrade costs so you're not sitting there waiting for the Upgrade button to light up...not knowing how long you have to wait.
Might want to add into the directions that the purpose is to "repair" your ship the 10 times. That way, people know what it takes to win the game. I cam across it completely on accident when I wanted to actually regain my health between stages.
I had at first given this a 5/5, but then discovered that the locked content couldn't be unlocked here at Kongregate. This is a major diasppointment and caused me to knock it down to 2/5. (I reserve 1/5 for those utter crappy games that deserve it.) Great game. Just sad about the locked content.