Dolphin Chainsaw Massacre

My first greenfoot game. I had to do it for a game design class, but I put a lot of extra effort into it, and would like to improve on it in the future. Any comments or suggestions would be appreciated.

Haha pretty strange game idea. Nevertheless, good work. Suggestions: - Make the graphics all relative (there's iron gating on the sides, cartoons compared to real images, pixelated and non-pixelated, etc etc.). - Use space bar as primary or alternative firing method. It's what most gamers are used to. On that note also I'd consider offering arrow keys as an ADDITIONAL alternative to WASD, although I'm not sure how effective that would be while also using the other commands... - Add better and more consistent rewards. Possibly even add rewards for doing a 360 with the turret just so people can push themselves? - I personally thought the turret was too slow and the dolphins were too slow. I ended up increasing the speed of gameplay ever so slightly (maybe by 20% or so) and didn't find it too fast, even after things started getting more difficult.

Oh and on another note, the scenario was slightly too large for my screen. Take this note seriously, as I'm sure it's a large issue for many gamers. The avg. screen res is 1366 x 768 (http://www.geek.com/articles/chips/most-popular-screen-resolution-increases-to-1366-x-768-20120411/). Taking into account any toolbars, address bar and tabs bar, as well as the bottom bar which, for most (or a lot) people, is automatically there and not a hover-over kind of thing, this game's still 150-200px too large (estimation) in height. I adjusted my browser zoom, but I'm sure most people won't do that.