Frustrating? HELL YEAH!
1-5 Interesting, gets gradually better and better. Makes you think a while.
6 I guess you had something preventing you from making better menus, which made me ALMOST rage-quit, 'till i checked the comments. Fine. BUT, couldn't you make some reminder IN-GAME? Wasted a good 20 minutes there.
7-9 Still great! 8 and 9 made me REALLY glad I checked Newgrounds today.They were definitely the best levels so far. First time I used help.
10 Now THIS is Madness! Just what the hell AM I supposed to do here!? I kinda understood what it's about, but then? I mean:
Forget solving it. I dont' get it! (And I couldn't even think of anything with the other 2) I was wrecking my brain on the middle one because one letter by itself means nothing. Even if it has some connection with the others, what kind? I was on this one for a good hour and a half. Still can't think of ANYTHING!
So, long story short:
1 Tell us about those menus in-game.
2 Give some link to a walkthrough. Video, written guide, anything. ("Brain" was handy, though not enough).
With codes like the level 10, some more help from "Brain" would really mean a lot.
3 A bit longer? Could do that, though this was plenty to keep me entertained for the whole day. Dont' have to though.
4 Do something about those^ and you have an PERFECT GAME!
5 Take my 5/5!