Embodiments of systems and methods described herein disclose the use of megatextures to specify blend maps for different instances of an object within a game environment. Each blend map may specify a blending between two or more different versions of the object. In some embodiments, the two or more different versions may correspond to different visual appearances associated with the object (for example, an undamaged object and a damaged object). The blend map for an instance of the object may be dynamically updated based on one or more actions within the game environment, allowing for the visual appearance of the object instance to change within the game environment in response to various actions.