Addictive as chocolate.
Excellently addictive, enough to keep me going for that final acheivement for another 15 days after I finished the rest. I finally managed it though! 6000 feet of distance... just. Brilliantly made, and a fantastic melt of skill and logic.
Brilliant.
Brilliant idea. Truly wonderful. That 3rd wave's hard D: The achievements are bloody clever too. I'll be playing this for a WHILE!
One of the best series on NG - by far.
The whole Spin series is just awesome, though at times insanely difficult to get your head around. It's a brilliant concept, and it works brilliantly.
No Knux?!? What's wrong with the world?
The designer was great, I loved it! But you said that we could make a perfect Knuckles. But I can't figure out how! I've made Tails, Sonic and a few of my own characters! Proper good fun!
11/10
*****
Gold Star
Deserves all the awards I can think of for character designers!
Age 33, Male
Student
Leeds
Joined on 3/13/05
Learn to Fly ! 
Portal Defenders 
Spin Sprint {Orange} 
Sonic Character Designer