Nice sequel, pity it seems so short - I want more!
I was looking for an indication per level how many objects I had needed to solve it, but it seems there isn't one.
Ok, add an energy bar, an in-game currency that can be purchased with creds that buys ammo, medkits, or food, and PvP, and a better sense of progression, and you'll have yourself one of these monetized Flash MMOs that seem to be so popular with Kongregate these days.
A short & enjoyable adventure! I think for the scope of the game, the interface and mechanics are quite sufficient; as you say yourself, the game would benefit greatly from being less linear, which of course is easier to do in tabletop because you ever only play out one alternative, and when you're writing a program, you have to do them all. If you had a story to tell, it could be interactive fiction. As it is, you tell a story through actions and consequences, while at the same time for the sake of the story,you mitigate some of these consequences (e.g. Graven Paige). I think that's what makes it hard to craft a satisfying game this way.
Short & sweet.
Hints: In level 7, it's not the owl that will help you, but the robot. In level 9, you need to be in the bed to get the key, illogical as that is (at least I didn't understand it).
Nice puzzles! I too needed the hint about the valves being sensitive to mouse speed, despite the posted "slow" - maybe you could place a hint in the description? Other than that, the biggest holdup was searching for the 4th relay I knew must be there, the boiler valves work really well as "to do" list. I also seem to have overlooked one of the notes, I found 7 when there seems to be space for 8. 40 minutes of fun! And what's the deal with the random letters on the wall?
This game is a sort of sequel to Tanooky Tracks (also on Kongregate), which is also credited to Michael Benrad and Anke Günther, like Ubooly 6 Friends.
 "Wake Up the Box 5"){kind=icon}
 "Frantic 3"){kind=icon}
 "Where the Rose is Blooming"){kind=icon}
 "The Children of Brinn"){kind=icon}
 "Myosotis Chapter 3"){kind=icon}
 "Tourist Paradise"){kind=icon}
 "Defender's Quest (lengthy!) Demo"){kind=icon}
 "The Case of the Mysteriously Missing Hat"){kind=icon}
 "Glitch, the Gardener"){kind=icon}
 "Shapik: the quest"){kind=icon}
 "Paper Pipe Twist"){kind=icon}
 "Hexa Connect"){kind=icon}
 "Clash of the Dragons"){kind=icon}
 "Antimatiere"){kind=icon}
 "Legend of the Void 2"){kind=icon}
 "Killer Escape"){kind=icon}
 "A blocky Christmas"){kind=icon}
 "Ubooly & Friends"){kind=icon}
 "Epic War 4"){kind=icon}
 "Gravitas"){kind=icon}
There are 8 notes, did you miss the one under the overdrive generator?