A game bag device may include a body having a first body sidewall and a second body sidewall. The first and second body sidewalls may be coupled together to form a body cavity. One or more core structures may be coupled to the body, and each core structure may define a core cavity. A core filler may be disposed withing the core cavity. A body filler may be disposed within the body cavity. Optionally, the device may include a core structure that may be positioned within a core cavity and/or a core structure that may be positioned external to a core cavity. Optionally, a core structure may include an aperture and may be coupled to the body sidewalls within a core cavity so that the device may include an aperture cavity that may include an aperture filler.