Steam’s catalog keeps on expanding, as MMOG publisher NCSoft has announced that its various titles will soon hit Valve’s digital distribution platform.

Already available are City of Heroes, Guild Wars and Lineage, with Aion due out this fall.

"NCsoft is a clear leader in the MMO industry, and we believe our player community will be very excited to have access to the diverse catalog NCsoft has to offer our members," said Valve business development director Jason Holtman.

To celebrate the occasion, they will be running “special offers” for NCSoft’s games in the coming weeks.