Dwarves vs zombies is a very fun role playing game in minecraft. Basically you start as a dwarf with jobs. there is the tailor, blacksmith, builder and alchemist.
Tailor makes armor gems which you click and get full armor.
Blacksmith makes weapon gems.
Builder gets stone bricks to build walls that protect the shrine, which is about 16 enchantment tables.
Alchemists brew potions and make god apples.
you then enchant and trade items in the nexus, a item trading place, and you have about 15 minutes to get prepared before one person is chosen as the assassin and he trys to kill as many dwarves as possible, and when he dies, all the fallen including spawn with monster eggs to choose what monster they want to be.
Then they attack the dwarves, killing more and destroying the walls and fortress finally getting to the shrine where they have to break the enchanting tables.
Every mob has there own abilities.
The game is very addicting and it basically uses minecraft as its engine. The game is about 1- 1 and a half hours long.