Horde mode or Endless Dungeon

+1 for survival horde mode

This is a good idea yes, similar to another Arena thread. Waves of monsters coming at you to die. I would love this in the game!

+1 for horde mode

good idea. i wants. :3

I would play this. You could set it up so that for each "round" or "wave" completed, a single gem would be offered whose value is relative to the difficulty.

Now if the reward was still a single gem regardless of the players, it would counter the easier time with less reward per player.

And an EXP mod of 1/10 or 1/100 could help too.