First Japanese publisher to distribute its titles using Valve's digital delivery platform.
Beginning later this week, Capcom will release Devil May Cry 3: Special Edition via Steam, with Onimusha 3 said to follow in the next few weeks.
"Steam is the right place for us to go with our titles. Valve has created a huge installed base of gamers who naturally fit with the profiles of the titles that Capcom develops," said Capcom's executive vice president Mark Beaumont.
Lost Planet Extreme Condition will be released on June 26, with Super Puzzle Fighter II Turbo HD Remix and future PC titles promised for later this year.