Personally I think anything above 300 is pretty tough to get to. We've joked about adding music into the game that lasts for about 3 minutes because most players (we don't think) would make it that far. After the song finishes playing it wouldn't loop, there'd just be an audio clip of the developers saying "Wow, still going strong eh? Well, right on. Keep it up!"
@DeadlockX47: Thanks for the comment! I understand it looks a bit basic- probably because it took us roughly a day or two to put together. What do you think we should add/adjust?
@SEDPWNS: Understandable :P but as far as it needing unity, well, most of the content we put out is Unity content so, for us, yea it kinda had to be Unity.
@Dr Morganski: Sorry if something was frustrating! How would you suggest we change SlowPower so that you would like it better?
Thanks Vash!
You're right about the movement being a little iffy still- it's currently my top priority. As far as the levels go, I wanted the first few to be relativley simple/easy for players to get a decent feel for the game. I'm already working on Levels 11-20, and while they all might not be as difficult as 10- you can definitely expect the depth of the gameplay to deepen as new features are trickled in over the weeks.
P.S I agree about the art too. Working on finding a sound/artist currently- I'm thinking maybe a Geometry Wars neon/glowy theme. I'll leave that up to the community as well as a new feature after the first major update.
Thanks again!
<3 Ryer
After playing, head over to the poll to vote on what feature gets implemented next!
http://www.acepolls.com/polls/1209390-what-should-maze-marathons-next-feature-be
Oh, and I'll probably fix a few bugs :P
 "SlowShooting: I HATE Squares"){kind=icon}
 "Maze Marathon"){kind=icon}