I don't know, maybe it's only me, but I have the feeling, that epic bosses stopped dropping legendary items. I got the last one around a week ago, since then none of them dropped any, which is a bit low even for the few % drop rate...
Be carerful! Smelting doesn't work offline. Furthermore, you have to retrieve already smelted ignots before you go offline, otherwise you will lose them...!
@Yamamba: special rewards like animals or trophies are given only when the collection is completed for the first time. Further completions will give only the packs (seed pack in case of feather collection)
Full of bugs. I can't even count, how many times I had to restart a whole section because I stuck or somehow ended up in an invalid situation (stuck upside down or in a insta-suicide loop as I entered a new room, etc)
Finally I killed the last one on hard, and I was progressing quite well on the pretty easy bonus level, when the sticky button bug just killed me... I hate flash so much
Incredible, that nowadays no resource is enough for "developers". Later levels with lot of enemies + bullets + fire on the screen areare simply unplayable thanks to the several second long lags. Don't tell me, that this is normal in case of a game with such a simple graphics...
 "Crush Crush")
 "Grow Defense")
 "Random Number GOD Idle")
 "Oceania")
 "Jumphobia")
 "Elephant Rave HD")
 "Unstable Engineer")
 "Shorties's Kingdom 2")
 "Tough Growth")
 "Zombie Society - Dead Detective")
 "Boss Battle")
 "Song for a bird")
 "Mine of Sight")
 "Dead End St.")
 "The Journey Home")
It is sometimes part of the game to hide things behind other things. So, there won't be rotating.