Create a custom world map generator module using a gaming framework or engine of your choice that leverages altimeter, terrain and imagery data to render realistic worlds. This will involve the use of a World Map Tile Service client to leverage over 1 TB of Mars and Vesta data for use in world generation.
Do you love building new worlds? Wouldn’t you like to build something that is "out-of-this-world"? Even though open world/sandbox games can generate worlds of various types, wouldn’t it be great if these worlds can actually contain real-life extraterrestrial terrains, rovers, robots and points-of-interest that exist in our celestial bodies? Well, NASA would love to challenge our international community to do something great using NASA data. Datasets are available for Mars and Vesta that can be integrated with open world/sandbox games to bring an out-of-this-world learning experience to players.
Consider popular world-based games. Leverage existing customizations and implement as a plugin or mod.