The Trolls are prisoners of a long-finished war. They are magically bound to the quarry where they are forced to labour their (extremely long) lives away. Their sense of hope being dulled by their sad past and the loss of their freedom and loved ones means that by now they're impervious to the taunts of pitiful boys. Go to Comment
The Trolls are performing the valuable task of growing minerals. They look after veins of ore which are germinating in the heat-beneath-the-ground and which they planted from seed thousands of years ago. Go to Comment
As every little child knows, the original trolls have eaten rocks, yes, stones and the like were their food. And these are the last remains of the trolls of old, they have found a unique type of rock, that has made them addicted, and now they live out their eternal lives in unending torment. I heard that if they were really hindered, they would wake up after some time - but boy, would they be angry!
The Trolls are digging for the lost portal to their Mad Cosmic God. Once they find the Gem of Algrath, life as all the intelligent races know it, will end. A new era will arrive. Those who believe in Algrath will rule over the shatter minds and bodies of those that survive "He Who Breaks The Will"'s comming. Go to Comment
The Trolls are dead, and have been for a very long time. They were once magically bound into the service of delving into the earth to build fortifications for a now long dead empire. The enchantment didn't die with their bodies, and instead preserved them in a sort of timelessness. The trolls seem detached because they are. They dring up no goods and take nothing down because they endlessly repeat their last actions before corporeal death. They go down, strike at empty air where the last block they cut was and then ferry it to the surface, moving nothing more than a memory. They are ghosts not of spirit, but of magic. Go to Comment
The Trolls once had a great Empire, streching miles and leagues under the earth, but in time, as Great Underground Empires are wont to do; they struck upon a chamber that should have been better left unfound. Now, ages and aeons later, they are constantly filling in the deepest of their tunnels so that no man-kin, nor anything else, could find what they found and unleash it upon an unexpecting world. Go to Comment
First thing I would do would be find a book of levitation. Solid 3 from me for the game idea as it is a perfectly acceptable idea, just weird.
Bonus points for the fun idea on the shape/type of book defining the character and his strength. I thought that was great. Also awesome hearing the library come alive with a murder. Even if you don't use this idea as a game in itself, you could use then entire theme in a normal game and location. Go to Comment
If a serious explanation is desired, you can add another book, forgotten on some bottom shelf, without a life of its own... the blood of the dead wizard has bled on the book, and, accident or not, it has started to release the souls it has once consumed (or maybe it is simply a gate to The Other Side(tm) ). As chance has it, the souls were then 'reborn' in the most ensouled objects around - books - and may slowly begin to remember the most faint memories of their lives. Whether the book will simply release them all, or unleash a plague of zombies on the world in the end, remains to be seen.
Still high-magic, but I hope it's logical enough, the dark touch is a bonus for AG. Is that sufficient? :D Go to Comment
Thinking of this, you might just treat the whole concept as a curse, or people reborn into books. And when they actually save the library, they could be made alive... a bit too high-magic, I know, but if there is a god of knowledge or libraries, it is not too far off.
So the players will define their new characters, and the GM will introduce them as... books. Once they save their world (the library), they become normal PCs.