Creating a DOOM-like raycasting engine inside Excel is a remarkable example of pushing the boundaries of traditional spreadsheet software beyond data analysis. By utilizing Excel’s grid layout, formulas, macros (VBA), and visual capabilities, developers can recreate the core elements of classic 3D games like DOOM, including rendering textured walls, floors and ceilings, sprites such as enemies and pickups, and interactive objects like doors and switches. This project involves designing a map editor within Excel’s cells, where walls, blank spaces, and player spawn points are carefully arranged. The raycasting technique then calculates the visible sections of the game environment from the player’s perspective, simulating 3D lighting and perspective effects using only Excel’s calculation engine and cell coloring. Key features include a framebuffer that updates the screen display, the ability to render dynamic sprites for enemies and objects, and HUD elements for player health, armor, and weapons. Sound and animation polish add to the immersive feel despite the unconventional platform. Excel’s Developer tab and VBA macros are essential tools in this context, enabling the automation and logic needed to simulate game mechanics such as player movement, enemy AI, and collision detection within the spreadsheet environment. Players can interact with basic AI enemies, pick up items, and navigate through levels, demonstrating both programming creativity and a deep understanding of game design principles. This fusion of gaming and spreadsheets showcases how traditional office tools can become platforms for creative coding projects, inspiring programmers to rethink software capabilities. It also highlights the versatility of Excel as an unexpected environment for hobbyist game development and educational demonstrations on game engine mechanics like raycasting. If you’re interested in game development, experimenting with VBA, or simply fascinated by innovative applications of Excel, this project serves as an inspiring example. It encourages exploring software in novel ways and shows how limitations can spark creativity to produce surprisingly complex results within familiar tools.