This is a medieval-, fantasy styled modification. For me it was a playground for rotating entitys, jump pads and cutscenes.
It has three maps including a castle, the inside with a kind of labyrinth and mini games like a donkey kong mini-level and the end fight in a medieval romanik-, gothic-styled church.
This mod was done for the quakespasm engine and needs -bsp2 and the add -heapsize640000 in command-line!
See the gsh_castleod.txt for further instructions.