Back in college, myself and a group of classmates created a video game for a "major design" requirement project. The game turned out to be pretty fun, and it won first prize in a student-run contest.
Now, 10 years later, I thought about rewriting the entire game from scratch using a modern engine, and selling it. I think it has potential to be a popular indie title.
Is this legal? None of the content would be taken from the old game, but the general design and game-play elements would be almost identical.
If possible, I'd also like to reuse the original name of the game as well.
Do I need to somehow contact my old classmates to acquire their permission? I honestly do not know how to contact them, and some of their names have even been forgotten. We only worked together for that one project.