Everything Is Over is a 200 word, one page rpg about destroying a world you care about.
The gameplay loop is simple. You roll 3d6, write down that many words, and explain what kind of world they come together to create. Then you roll 3d6 again, and remove the word corresponding to your roll, chipping away a little piece of the world.
It's a cruel exercise, and mathematically it's a little weird (when destroying, you're supposed to reroll all rolls that don't match the number of a word, so an initial world-building roll of 3 does squirrely things to the math), but emotionally it's very effective.
So overall, if you want to feel things and all you have are 3d6 and some paper, this is very effective at that task. Everything Is Over does a *lot* within its fairly severe constraints, and if you like game design or world-ending I strongly recommend you check it out.