Firaxis Games' (XCOM: Enemy Unknown, Civilization) free-to-play mobile game Haunted Hollow is available now on the iOS App Store. As we noted last week - when the game accidentally launched the first time - Haunted Hollow takes place over a series of one-on-one, tug-of-war style matches in which players scare the local villagers.

Firaxis also has another iOS title ready to fly in with Ace Patrol, a World War I dogfighting tactics game by strategy game guru Sid Meier himself, which will be available May 9 as a free download.