Your whole registration idea made this game 100% unplayable for me. I used to play this ALL THE TIME. Now I'm unable to play at all. Every idea you had for this game made it worse. GG Abalore.
I loved this game, got instantly hooked and even played in the sandbox for a while after I'd finished evolving just to see how big I could get. (I got huge) But I think you should add a quality option that allows you to turn things down SUPER LOW, because when you're flying 10000 mph and are bigger than the city you're terrorizing things tend to get laggy. Also if you made more evolutions I think you could get this worm looking a lot scarier while prolonging game enjoyment time.
I think it would be very helpful if when you mouse over rare units you just obtained in the units bank it gave you a little description of what it was.
 "World Rebellion II"){kind=icon}
 "Effing Worms 2"){kind=icon}
 "Enigmata: Stellar War"){kind=icon}
 "Flight"){kind=icon}
 "Doodle God"){kind=icon}