Since its emergence on the App store in June, Fieldrunners 2 has been quite the success for developer Subatomic Studios, surpassing $1 million in sales back in September. Today, the lauded tower-defense game jogs onto Steam.

For the big Steam debut today, Subatomic Studios has knocked a buck off the asking price for Fieldrunners 2, bringing it down to $9. The original Fieldrunners launched back in 2008 and quickly established itself atop the iOS App store, eventually being ported to a whole bunch of other platforms. It would seem Fieldrunners 2 is destined to repeat that walk on the road to success.