Great Hunger Games Map, with space for 10 people (however, you can upgrade if you want to) and 28 chests. There are four tiny biomes:

Grassland,
Crater,
Hill,
Forest. </ul>
And of course, everything is very customisable.
When you load the map, you are in a reasonably large glass dome, with a tall, stone brick tower in the exact center. This tower holds the command box, and redstone runs down the tower (so don't open it!). In the command box, there are two switches:

a lever to open or close the gates,
a button to activate the dialogue function. </ul>
Please note, the dialogue function is COMPLETELY optional, and simply welcomes your contestants and tells them what to do. If you want, you can say the rules. You can also add to the command block where the dialogue is stored.
This is a great hunger games map, and I look forward to seeing some Let's Plays!
ALSO NOTE ALL CHESTS ARE EMPTY TO START WITH! PLEASE FILL WITH WHAT YOU SEE APPROPRIATE!

A World Perfect for Servers with any Amount of Players.
The Diamond Quest is a fun and interactive game for both you and your players, and it doesn't really have to be for a server, either.

THE GAME (PLAYERS)-
100 Diamonds are hidden around the Great Mansion. Take the train from the Spawn Point to get there. Walk the bridge and read the rules.
You win a prize depending on the server. You may kill, but only to get the gems the victim has.
You can only walk back outside the house, once you have 100 Diamonds, and in the shack, adjacent to the mansion, will be a server operator waiting.

THE GAME (OPERATORS)-
In the Great Mansion are 100 Diamonds hidden in chests or puzzles (dispensers etc) and once the players have gone in, a moderator or operator should wait in the shack next to the entrance, where players will exit once they have 100 Diamonds. Check the amount of diamonds (a stack of 36 and 64) and then give a prize. After the prize has been given, disconnect all players and reload the map (or go in manually and replace the gems).