I trawled the internet for the best challenges and wargames for you guys to check out, post if you have any i have missed out.

Wargaming Events
http://www.omnicompete.com/
https://cybersecuritychallenge.org.uk/
http://ddtek.biz/

Shell Based Wargaming
http://smashthestack.org/
http://www.overthewire.org/wargames/
http://intruded.net/wargames

Vulnerable Distros
DeIce 1 and 2
Damn Vulnerable Linux
pwn0s
http://sourceforge.net/projects/virtualhacking/files/os/hacking-lab.com/
HackerDemia
Metasploitable
Kioptrix 1
Kioptix 1.1
Kioptix 1.2


Web Based Challenges
http://www.iexploit.org
http://hack-me.org/
http://mod-x.co.uk/main.php
http://www.microcontest.com/
http://webhacking.kr/
http://securityoverride.com
http://gekko.csokavar.hu/
http://www.enigmagroup.org/
http://www.spoj.pl/
http://thisislegal.com/
http://www.hackthissite.org/
http://hispabyte.net/
http://www.hellboundhackers.org/
http://www.net-force.nl/
http://www.caesum.com/game
http://www.bright-shadows.net/
http://www.rankk.org/
http://www.hackquest.com/
http://www.brainquest.sk/
http://www.infomirmo.fr/
http://www.dareyourmind.net/
http://www.newbiecontest.org/
http://www.happy-security.de/
http://www.astalavista.com/
http://listbrain.awardspace.biz/
http://www.cstutoringcenter.com/
http://www.javaist.com/rosecode
http://hax.tor.hu/
http://warzone.elhacker.net/
http://hack.thebackupbox.net/
http://phmaster.info/
http://3564020356.org/
http://www.mibs-challenges.de/
http://www.tdhack.com/
http://www.trythis0ne.com/
http://www.osix.net/
http://www.black-zero.com/
http://www.hacker.org/
http://www.root-me.org/
http://securitytraps.no-ip.pl/
http://hackbbs.org/
http://www.tools-and-design.com/
http://sabrefilms.co.uk/revolutionelite
http://w3challs.com/

Fictional Hacking Games
http://www.hackwars.net/
http://www.slavehack.com/
http://www.hackerforever.com/
http://www.hacker-project.com/
http://ihacker.co.uk/
http://www.introversion.co.uk/uplink/
http://www.streethacker.com/
http://www.exosyphen.com/page_hacker-ev ... ntold.html