The following are a list of free games written in PHP
http://www.heroesmini.com/register.php – Heroes of Might and Magic
http://dragon.se7enet.com/dev.php – Dragon Knight
http://sourceforge.net/projects/blacknova – black nova Traders
http://www.0php.com/reviews/0171.php – hangman
http://www.0php.com/reviews/0172.php – anoi towers
http://www.geocities.com/markoriedelde/life/index.html – Life
http://www.geocities.com/markoriedelde/Minesweeper/index.html – minesweeper
http://www.chipmunk-scripts.com/scripts/riddles.php – chipmunk riddles
http://www.chipmunk-scripts.com/killmonster/login.php – kill monster
http://sportsphool.sourceforge.net/ – sportsPHool
http://www.fightwith.me.uk/ – fightclub
Online Role Playing Games
http://phpolrpg.sourceforge.net/ – PHP online RPG
http://dragon-soldier.net/ – dragon soldier
http://www3.kingdomofloathing.com – kingdom of loathing
http://www.lotgd.net/ – legend of the green dragon
http://www.vendetta1923.com/ – vendetta
http://www.thecrims.com/ – the crims
http://www.travian.com/ – travian
Strategy
http://www.blacknova.net – black nova
http://www.aatraders.com – aatraders
http://www.quantum-star.com – quantum-star
Other
http://deepdungeons.sourceforge.net/ – This is a desktop app written in PHP+GTK it is called Deep Dungeons.
http://www.32cards.com – 2006 world cup game based on the PECL extension winbinder.
http://www.ogame.org/ – strategic space simulation game
« Optimizing PHP objects improving php performance on apache »