Hi, I'm Adam Sierra, a professional programmer and hobbyist game designer. Ever since I was 14 I've been making custom maps for games starting from Doom, to Half-Life, and all the way to Left 4 Dead 2. Unlike most hobbyist level designers, I enjoy making maps that break the mold of what is expected from the games they run on. It gives me much pleasure when I give people surprise by doing the unexpected, especially when it was previously thought impossible to implement!
Here you will find much of my work including downloads to try them out yourself. Not everything I've created is posted yet, but I am adding more and more periodically so check back every now and then!
You will also eventually find many articles I intend to write, on things I've learned in the game design field, as well as other interesting topics.