Lunar Lander was a game initially designed on DEC mainframe computers as a turn-based sim in 1969.  Later remakes added graphical and real-time elements, culminating in Atari's 1979 vector arcade port, and modern versions are still be produced for mobile devices.

It's a simple game. For our purposes, it's characteristics are:

• The player is trying to land safely on a surface.
• Controls are thrust and orientation
• Landing too fast or on an unsuitable surface destroys you
• You have limited fuel, consumed by thrusting

Remember, the goal here is not to recreate or upmake Lunar Lander. It is to create a new game using the above four elements. For this jam, your game can be graphical or textual, real-time or turn-based.

Good luck!