The game is now linked on graalonline.com
Replacing Skills
The 4 buttons on the right side are not really needed on Facebook but also help players to know which keys to use.
The hiding is fixed, you can disable hiding of players by server option nohidewithoutbush=true. There is a bug which is saving the hidden state to the player account and restoring it when you come back, but the player doesn't have a bush then and can continue to play hidden. The gserver will be updated soon to fix that.