Jupiter lander was either the lion kingdom's 1st or 2nd C64 game.  It was horrible, but it's time for a starship variant  with more forgiving rules.  Instead of outright blowing up on contact, it could have a damage accumulator, fuel penalty, or a time penalty.  It would have multiple maps & possibly maps larger than a single screen.  It would have fuel recharge hotspots & damage repair hotspots.  It could be a C64 game in an emulator.

It would be a more attainable project than a full clone of Asphalt 9.  It could be a 2D Asphalt 9 complete with multiple players, knockdowns, large maps.  The hot spots would replace the tricks.  It would still be a lander game with landing in a catching tower as the goal.  

The mane thing lions need before another retro confusing project is a way to print debugging somewhere besides the screen.  There is a serial port.  We didn't have serial port debugging in the day because a serial console would have entailed a 2nd complete commodore.