Wantapa County, Oklahoma

, is a fictional location that serves as the main setting of Nightfall: Cryptic.

Vic Wolfe traveled here for a week-long camping trip to start his cryptozoologist career off strong. It has gained a reputation as being a hot-spot for all kinds of supernatural activity, ranging from alien abductions to ghost activity to bigfoot sightings. It is located in central Oklahoma, consisting of the small city of Wantapa, the county's namesake, and other neighboring towns. North of Wantapa is the large Lake Ninikan and the powerful Wantapa river that wraps around the western side of the county. The small town of Dasoonag sits alongside the lake, and is the second most populated area. The notorious Murpheree Intersection lies between the two towns.

Wantpa County, aside from the two central towns, also includes surrounding regions, such as the arid and desert-like Saguaro Dunes, the heavily-wooded and mountainous Pine Hillsides, and the farmland-dominated Sigma Township.

There are seven different Regions that make up the game world.