In an odd move that’s becoming less and less surprising (at an alarming rate, might I add), Sony has released Ratchet & Clank: BTN for free on the App Store with pretty much zero fanfare. It just sort of appeared today with no explanation, which seems to be turning into a trend for major iOS releases lately.

Anyway, Ratchet & Clank: BTN (which stands for Before the Nexus) is an endless runner set in the R&C universe and set up as a sort of companion piece to the new PS3 game, Ratchet & Clank: Into the Nexus. Despite being a runner, many of the series’ staples have found their way into BTN; including some classic weapons, bolts and their requirement for upgrading weapons and armor, rail grinding, and gadgets a-plenty.