There are 13 fields available for football plays and formations. The NFL – Red Zone Offense field is available to everyone and used (with the Whiteboard theme) in the free football play designer. The other 12 fields are available only to pro subscribers.
Each field type (Red Zone Offense, Red Zone Defense, Full Field, and Focus) has a version for NFL, NCAA, and High School field markings.
These screenshots show the Grass theme but all football fields are available in the Grass, Whiteboard, and Chalkboard themes as well as any custom themes that you create as a pro subscriber.