I've made a few personal mods before, nothing big; some character skins for JK3, maps for the SAGE engine (Zero Hour and Tiberium Wars specifically). Making maps is a lot of fun for me, especially, tho I'm in no way a pro at it yet. I'm thinking about posting stuff here as I work on it. Who knows, others might like it too. I'm currently writing the design document for and creating a prototype engine of my game idea, "Codename Vast". Generally speaking, it will be an MMORPG.
This is a screenshot from a game I'm developing. Left is 3rd person (way zoomed out), right is first person. So far, it's a sphere that traverses a matrix constructed from a heightmap, surrounded by a low quality skybox. More to come as it develops...
I've been looking to prototype a game idea I've had for years. So, I took this old heightmap I made and turned it into a matrix terrain with some detail tiling. So far so good....
Programming games has seriously gotten easier since I started as an adolescent. It used to be you had to code everything from scratch. Now, anything you want to do can be done with standard functions in any given library. So, as long as you have some creativity and patience, you can make it happen. Now, where did I leave my patience....