Another game I'm working on is also a thematic trilogy using the same rules; this time a trio of interrelated sixty-minute space larps. Each has four characters and a fixed diegetic 60 minute play window. You have a couple of Big Decisions to make and then you're done, and the outcome will inform the next game if you want to play some more. #larp
One fun thing about all three games is that one of the four characters is always a sapient spaceship. Would you like to play a sapient spaceship? Most people say that they would. You can exercise a lot of creativity in how you actualize this - in one playtest this character, Eel Huff, was played by someone sitting at a desktop PC using a text to speech program.
So, you know, four players, four characters, 60 minutes, boom-boom! It's a fun and under-served format. Each game has a super tight relationship map and it is obvious what needs to happen. How it happens is the fun part and these games seem to work well in playtest.