Not sure if there's already a game like this, but i'm starting this up anyway XD

The game is called Chain Reaction. You post a two-word post, and the next poster has to use the second word as their first word.
I sincerely suck at explaining stuff so here's an example:

Poster 1: Base Ball
Poster 2: Ball Hog
Poster 3: Hog Warts

I'll start us off!

Key Board

underwater world

world apocalypse 

Apocalypse Now 

Now here

here again

Out (of) Order

(little confused as to how we came to "out" from "again"?)

Again Faster

Faster Rhymes

rhymes with

With Out

out lander (does that count?)

Lander training (using the definition of lander as "one who lands")

Training Course

course catalog

catalog number

Number Ten (Downing Street)

ten questions

Facebook quizes

quiz questions

Quiz Master