Mark of the Ninja sneaking onto PC in October

Stabby sneak 'em up Mark of the Ninja is indeed leaping from Xbox Live Arcade to PC via Steam on October 16, developer Klei Entertainment confirmed this morning. It'll cost $15 and no, just in case you were worried, it won't use Games for Windows Live.

"I'm primarily a PC person myself, and I'm not okay in any way with this feeling like a shoddy port," lead designer Nels Anderson told Rock, Paper, Shotgun. "It's my intention that this is a full, proper version of the game in its own right."

Mark of the Ninja launched on XBLA earlier this month to rave reviews, a few of which are quoted in this new trailer celebrating the Steam announcement: