SwordQuest

A simple mini game to understand,you choose your class, venture to the nether, and survive.
Classes:
 
Swordsman: Has a stone sword,plus a potion of swiftness. armor:leather
Archer: Has a bow and arrows,plus a potion of invisibility. armor:chain mail
Knight: Has an Iron sword , plus a potion of regeneration. armor:iron
Wizard: Has  splash potions of poison, harming and weakness.Also has a diamond axe. armor:gold

Each class has 64 cobblestone to build there house(or fort) in the nether. In the lobby,(or, if you are doing LAN,where you spawn.) there MUST be a nether portal in there. Each class comes with a bed.

The goal is to survive through the nether, and the other player's attacks.

Quests:
Beat 4 withers
Beat the ender dragon(there should be an end portal there.)
Successfully defend against enemy player's attacks.

This project isn't ready yet, though.(Sorry)
Make a chest and store most of your items.(That is only a tip, by the way.)
Try this with Mods!
There are class shops where you can buy classes