Halo 3 Map - Odyssey
I was very involved with the Halo content creation community from 2010 to 2015. In total, I spent around 1000 hours building maps and game modes. I included this in my portfolio because building these maps taught me a ton about game design and inspired me to seek a career in games.
In this Halo game mode, one team (the humans) progress through three levels in which they have to defeat the players on the opposing team (the monsters). All human players start in the same place with a sword and can walk around the map freely while monster players are stuck inside the three levels of the game. The humans have to kill all four players on the monster team before time runs out to win.