The arena is a randomly generated survival world in a "normal" biome (ie. trees and animals) with a border. The goal is to be the last one standing by getting wood, making a crafting table, getting stone, etc. You can only use and break your own crafting tables/furnaces etc. and PvP is only possible with stone tools and above, so early game is focused on harvesting resources. Alternatively, there can be a countdown to pvp enablement with anything to allow for discovery of iron. What I imagine the game will basically boil down to is a rush for a stone sword or axe, with a free-for-all pvp battle from there. There can be a corruption type effect to prevent camping. I'm also thinking it could be enhanced by hunger games style loot crates. The idea I was going for was just a (hopefully) fast fusion of vanilla survival and hunger games. I'm sure that if the game is too repetitive or slow, it can be modified in several ways.