I'm unsure, I suppose dpmaster updated its website, so it recognizes game types.
"directory names" are not always relevant of the game type, so that's a good thing it changed.
Though, directory names were also useful, so unless some other column is added I fear you'll have to use other tools to view directly that info.
When clicking in the server details you get these infos:
http://dpmaster.deathmask.net/?game=openarena&server=88.208.237.1:27961...
game cpmaoacl2010
gamedate Apr 22 2009
gamename cpma
gametype 5
...