Good free pc games

[Mel0307]

Hi, I thought I'd start a thread on some good free games I have come across.
Feel free  to share yours

Maple Story, I like the look of this one, looks cute. Havent played it yet tho - http://maplestory.nexon.net/Intro/

Track mania, racing game - http://www.trackmanianations.com/indexUk.php

Alien Arena, fps game - http://icculus.org/alienarena/rpa/

Free Civilization - http://freeciv.wikia.com/index.php/Freeciv

Super Mario: Blue Twilight DX Free Full Game - http://www.gamershell.com/download_11097.shtml

Mario Forever v3.5 Free Full Game - http://www.gamershell.com/download_14264.shtml

Tibia, A Zelda style rpg - http://www.tibia.com/mmorpg/free-multiplayer-online-role-playing-game.php