you cant play it any more
I can find piraka animation games in lego.com and play as the matorans, pirakas, and inikas.
Biomediaproject(dot)com in the games section.
Irnakk is a Nightmare from the minds of the Piraka
the piraka dont have a leader they mainly hate each other :) But Zaktan is usually considered the leader.
you can find people who are selling piraka today in 2010 by going on eBay on buy cheapr and bizrate.com
gust have fun, play in the piraka playground. walk around and relax. and if you want, you can unlock the 3 chambers in the piraka playground. but if you like you can start all over. PS. i finished the game, and i did what i typed. but i didn't start over again.
Places I recomend is ebay and amazon to get thok.
Skrall - B4DBO1 Piraka - P1R4K4 Tahu - GO74HU
Building instructions for BIONICLE 8892 Piraka Outpost can be downloaded from the Building Instructions area of the LEGO Customer Service website. Just enter 8892 into the "Quick finder" search box at this location: http://us.service.lego.com/en-US/BuildingInstructions/default.aspx
You play their ability card
A bunch of stuff - residents of Metru Nui discover that Mata Nui is not only sleeping, but is dying. The turaga send the Toa Nuva to get the mask of life, Mata Nui's only hope of survival, in Voya Nui. They are captured by the Piraka, a gang of Skakdi, causing a group of matoran to go look for them. They become the Toa Inika, who fight off the Piraka and free the Toa Nuva. The Inika and Piraka then descend to retrieve the Inika, where they face its guardians in battle. Better overview can be found here - http://biosector01.com/wiki/index.php/2006
if you are meaning the link that took you to the page with the Inika and Piraka games I'm not sure where they went but they can't be played via the Bioncle Website You may have to find them on the PLAY or GAMES section of the Lego Website Biomediaproject(dot)com in the games section.