Good idea
Good game, I can see that it's quite professionally done and the concept is interesting too. However, it would be nice if you made the graphics nicer, maybe add a theme to the thing, like spaceships and aliens and whatever, not just circles and squares.
Wow great
Great game I actually played for quite a while, addictive, challenging and interesting, and gets harder!
I just wish there was an upgrade to heal yourself so you could play longer!
Awesome
I love the whole idea, this is something you don't see very often :D and you actually learn interesting stuff as you play! I really liked it and the design and graphics were really nice too!
Only one thing: the controls could be more responsive somehow, it's too slow and the sperm has too much momentum, feels "heavy". I know that this probably adds to the difficulty, but it doesn't feel good enough, so just a small detail.
Well...
It's all right but we've seen loads of games like this that were much better programmed. The graphics are very lame and the music is very annoying, and when you click on the stairs in the beginning, you get a red X showing you can't click there, but if you click a bit before the stairs you can click on them... That happens all the time... It's quite boring after a while and most scenes are just empty with nothing to do.
You're supposed to walk in front of doors and the like, much the same as in real life when you walk up to something to use it. This concept is, in fact, established by the dialogue of the first door you click.
Cool game!
It's a nice game with awesome graphics, and pong is an awesome game anyway! The only thing is while the blurry tracing effect looks really cool, with 20 ball on stage it can get very messy and difficult to see, so the traces could be a bit less pronounced, say more transparent or something, that could help!
Its all right
It's all cool, the concept is original and all, but basically it's just objects falling and you have to avoid them. You could maybe make it more varied, not just lines and objects alternating, but other stuff, like, dunno, some more chalk-board-ish stuff... The rotating thing is interesting and you could go further by adding gravity and other stuff that changed with the rotation, because like this, all that changes is that you have to use different keys.
Also, please offer an option to change or stop the music, that hardcore techno can get annoying!
Oh, and nice graphics with the chalkboard and all.
Wow
Haven't enjoyed playing a game this much in a long time! I love platformers and I love the whole game concept, the screen-size levels that are often very simple, and often very complex, that you have infinity lives, and all! The graphics was also retro which I love, and the whole gameplay is very simple and you don't get messed up with changing and reloading weapons and all, and really good atmosphere too! Plus the story is nice and confusing too :D
Great game!
Nice!
Nice engine, looks and feels stable to me, just make it a bit snappier, more responsive, the character feels too heavy and should be less "lazy", im not saying it should move faster, but it should accelerate and decelerate faster. Other than that, good base for a good game!
Yeah
Good idea, nice graphics, but the gears don't snap enough to each other, it's quite hard to place them in a way to make them fit perfectly (when the red dots show on both sides). Plus it does get a little boring, only gears is not enough, maybe put some more stuff in, gears, motors, batteries, generators and all the usual mechanical stuff.
Age 35, Male
Joined on 1/6/08
TheSuperFancyCir.AvoiderG 
GlueFO 2.0 
The Great Sperm Race 
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