"Eff the Effing Machines"
I jhave to say its pretty mediocre... and I mean that it didn't gave all that it could give.
Its an awesome game, old-style with no real story line just take action! but there could have been more equipment, and Better more stages and levels!!!
The upgrades are pretty good but when you reach the 4th ( I believe, didn't count them) upgrade of the cannons you are more likely to win with no problem and it stops being so much of a challenge!
I really look forward to a sequel with more, and Much more... pretty awesome keep it up!