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The ROBLOX team has sent word that a new FPS-style game has been developed for players to try out. Called Base Wars, the dev team has written a great article about the process of taking the game from level design all the way to completion.
Base Wars’ level design was a front-loaded process, so the ROBLOX Content Team focused its initial efforts on implementing the capture-point mechanic through careful layout planning. What started as whiteboard drawings became a balanced, successful map through about 10 iterations – spanning everything from a sketch, to a single-texture layout used to determine the scale, to a version with identifiable bases and paths, to a final build with all the shortcuts, elevation changes and cover objects in place.
Check out the full developer blog on the ROBLOX site.
While you're there, you might also want to check out the Base Wars Low Lag Level Weapon Design as well.