wats the use of Gremlins Castle ?
 

anyone koes wats the use of this thingy ?

Went into it but nothing .....

You can find some runes and with luck even an artifact there. That's all I found.

really ? but i couldnt find anything inside when i went in , or do i need to go in multiple times depends on luck to get something inside ?

There are 2 blue portals that will lead you deeper in. It's a rather big place with lotsa rooms and enemies to fight and, of course, loads of treasure.

just for experience i think..i got a few runes and a black dragon egg.

Its mainly for XP like the Arena but you can get some nice cash and other stuff if you clean the place out well and its a good place to lvl any of the rage spirits, I cleaned the hole place out with blackholes hehehehehe

You can find some nice goods there. I've found two Black Dragon eggs, resurrection&sheep scrolls, some runes and a lot of... XP!