What Exactly is a DDOS ATTACK?

what game BTW?

Sort of like flooding your network traffic with requests. Maybe check for Pando Media Booster too because some games come with that.

Distributed* Denial of Service, and you probably arent a victim. It basically consists of pinging the same ip multiple times but you have a lot of computers in on it so it has an effect and slows down/stops the person's internet getting DDOS'd

Unlikely they would target you specifically. Think of it like a hundred people calling your cell phone at once. Considering your phone can not answer or response to all of them, some will get the busy signal. Now magnify the scale and that's many IPs requesting service from one server.

They flood you with packets. Watch some defcon 19 videos, you'll understand what it is.

Wiki is awesome!

As far as how to prevent it? Good luck. Really, not all that easy to prevent them, but if you suspect your IP is being attacked, unplug your modem and router for about 5 minutes. Plug in modem first, then router. With most ISPs that's enough to get you a new IP address which is all that tends to be needed to stop an attack. It also is good to make sure you have a router, since they have firewalls to block that from getting to your computer. A software firewall does little good and often will crash because of an attack because it is just too much for most programs to keep track of. Basically you're getting around a million pings within a matter of seconds and most internet connections can't handle that.