I never finish projects, so I'd like to set a hard deadline, in this case 2027-08-20 (Voyager 2 launch)

I'm thinking that it could be a (local splitscreen? Or maybe like one of those hand-off/relay style story games where you pass the controller when it's your turn) co-op game where one player acts as Voyager 1 and the other as Voyager 2. It has to be a co-op game, we need more of those I think, and I would love to learn how to make one of those. Maybe you could solve puzzles or unlock secrets by working together, I dunno. The story will be a mix of real life events (emergencies / crisises that occurred during the mission, real images and recordings, etc.) and fictional bits too (nothing too outlandish though, probably not aliens I think?)

Both Voyager 1 and 2 explored Jupiter and Saturn, and while 2 went out to Uranus and Neptune, 1 did a flyby of Titan (the largest moon of Saturn). I'd like to include those five as "worlds" that each player has to explore. Voyager 1 has also passed the heliopause, and in a few weeks will have reached one light day from Earth, so I'd like to include that too. Perhaps there could be interesting things that happen as the Voyager probes travel the cosmos?

What are your thoughts? Are there any noteworthy events or challenges that the Voyager missions went through that I should include in the game?

The project is still in very early planning stages, but I think it's a really cool way to celebrate the Voyager missions!