Abstract: The 3D Rendering of 2D Legacy Game Assets upgrade method of the present invention represents a means of un-retiring once popular video reel slot machine themes by projecting their 2D game symbols onto virtual reels mapped into a full 3D environment. Because this upgrade strategy makes use of original 2D legacy game artwork and does not require graphic artists to make modifications, it is both easy to implement and cost effective. The conversion process may be fully automated, allowing a mass upgrade of thousands of game titles on a relatively short timetable. Games created via the present 3D Rendering of 2D Legacy Game Assets upgrade method will allow players to enjoy the classic feel and realistic reel spinning action of mechanical reel games while not missing out on advanced features of video reel games like multi-line play and touch screen interactivity.