This project is suitable for high schoolers who have studied The Odyssey (mine is specifically related to The Essential Odyssey). The project is extremely open-ended and focused on providing high schoolers the opportunity to develop their ideas and follow through with a college-like project plan. It brings out the best in them because they enjoy the flexibility and chance to be creative. The document is in Word format for easy altering to your scheduling needs.
The students first submit a list of details they plan on using in developing their game, then a game proposal that outlines the steps they need to take to finish the game. They are then graded based on their own proposal. The final grade also includes an (optional) evaluation from the 5th graders - the students go to the 5th grade classrooms, explain their game to a group of students, and guide them in playing. The 5th graders rate the games based on educational value and level of fun.