Here is a very difficult Baba is You challenge. It's not a level or a levelpack, but the puzzle of creating a level which meets a specific criterion. It took me four days (a few hours per day) to find a solution. It felt analogous to pre-paradigmatic research, gradually building understanding of a thing and encountering apparent paradoxes that seemed to make it impossible.
The criterion is: The level must require the player to undo at least 2 moves while holding a delayed infinite loop trigger in order to WIN.
I'll try to only spoil the basic requirements.
There is a bug in the game where:
(In other words, the player must at some point be forced to toggle that 200 times, then press Z to undo at least 2 moves, and only then make a non-undo move.)
Destroying the level has two effects:
WORD loops.What is a WORD loop?
FIRE IS WORD makes the fire-object also count as a word. For example, FIRE IS WORD at the same time as [fire-object] IS YOU AND WIN results in winning.Given some series of texts like...
STICK IS WORDROCK AND [stick-object] IS WORDFIRE AND [rock-object] IS WORDLAMP AND [fire-object] IS WORDAfter STICK IS WORD is no longer formed: Every time the game reprocesses text, one line of text down will also become inactive; or active, if it was previously inactive but the one above it is active (e.g. if STICK IS WORD was only formed for one turn).
If it instead ended with FIRE AND [fire-object] IS WORD, that final line would be self-sustaining once activated.
You can ask me for hints by replying to this comment.
Yes. Here are some:
Yes, but you wouldn't be able to experience the challenge unspoiled after. Here is the level code:
YWYE-QT6W. (The signs on the right contain hints)
(Updated Jan 15 2025 to patch an unintended route that didn't quite meet the description)
Video of solution: https://0x0.st/8opq.mp4 (expires on December 22, 2025)
Post your level here if you want! (I'd be curious to see it)
Yes. Find some combination of rules and objects which is probabilistically guaranteed to have an intended effect on an arbitrarily large but non-uniform baba gridworld. Assume the baba gridworld contains a computational clone of yourself near the location of the structure; the 'intended effect' refers to what this clone thinks would be best.
This is an exercise about Planmaking and Surprise-Anticipation. It takes about 2-3 hours. It's a small, simplified exercise, but I think it's a useful building block.
Humans often solve complex problems via iteration and empiricism. Usually, trying to figure everything out from first principles without experimenting is a bad idea. You can spend loads of time thinking, and then you go outside and interact with reality for 5 minutes and realize all that thinking was pointed in the wrong direction.
But some important problems have poor feedback loops, such that iteration/empiricism don't work very well. Experimentation might take a really long time, the results might be noisy, or you might just really need to get something right on the first try.
Often, when making a plan in a confusing domain, it's enough to just ask yourself "how do I expect this plan to turn out?" to get you to notice ways the plan is likely to fail. Then you can fix those things. This is often faster than doing the entire plan, and watching it fail, and then doing it all over again.
This exercise uses the Baba is You videogame to teach a combination of rationality skills (which I suspect weave together into something greater than the sum of their parts):
Those skills weave together into something similar to Murphyjitsu, but with a somewhat different flavor. The exercise is intended to build upon Exercise: Meta-strategy [TODO], and is a stepping stone building towards Generating 10x Plans.
I've tested this on ~6 people, including myself. So, this is still experimental, but I think good enough about it to ship it publicly for now. Let me know if you try it. You can post your results in the comments (please spoiler-block them).
Format:
I recommend doing the exercise using this google doc worksheet.
(I think this exercise would work well as a meetup where one meetup-organizer has read the post thoroughly, has already done the exercise once, and can help other people who are confused or stuck)
Step 0: Read this blogpost
This is a fairly involved exercise. I've broken in down into steps so you only have to think about one thing at a time, but it's useful to first read through the whole thing so you can see how all the pieces fit together.
Step 1: Download the Game, Pick a Level
We're practicing planmaking in a game called Baba is You. Baba is You is a really great puzzle game, but we're adding some additional wrinkles.
My favorite version of this exercise is one where you've never played Baba is You before, and part of the task is figuring out the core gameplay mechanics without even interacting with the game. (If you haven't heard anything about the game before, I highly recommend not looking anything up first)
If you're a rationalist nerd on LessWrong, you've probably heard about or even played the game. That's fine. Unless you've literally beaten the entire game, this exercise works if you play a level you haven't played before. (I recommend picking a level that introduces at least one new mechanic you haven't seen before)
So, go download the game on Steam, or whatever device you prefer.
If you've never played the game before, I recommend starting with a particular level I made, via:
If you have played some Baba is You, I recommend looking at these levels first:
If you've played those already, then basically pick up wherever you left off in the game, and try to find a level that "feels hard-but-not-too-hard." (A somewhat rough problem is that people who've previously played Baba is You tend to stop when they reach a very difficult puzzle, and that means it may be a bit too hard for this exercise to work well. You will unfortunately have to use your own judgment on which levels are a good experience for this.)
Remember to pull up the google doc worksheet.
Step 2: Observation, Orientation and Livelogging
Once you've gotten to a level that seems like a good fit, stare at the level for a bit and soak in the details. It will look something like this:
I recommend writing down the all the details that seem relevant.
More generally: I recommend livelogging. Jot down notes about your thought process as things occur to you.
After soaking in the level, start thinking through how to solve it.
If you're new to the game, you might ask "How do I solve it? What are the rules? I don't even know what it means to beat a level of this game." Part of the point of this exercise is you do have information about that, even without having played the game. You've played other games before. If you haven't, you've probably interacted with the world and you can make an informed guess about what you need to achieve.
A level might introduce multiple new mechanics you haven't encountered before. For each new element, I suggest coming up with some guesses as to how that element will behave, or what happens when you try to interact with it.
Step 3: Write out your plan
Okay, now start writing down your best guess plan for solving the level.
This can include things like “I think if I do X, it’ll most likely cause Y to happen, but might cause Z to happen instead. If Y happens, I’ll do Plan A, if Z happens, I’ll do Plan B.”
(You don’t need to go crazy branching out on every possible option for this exercise, just pick the most likely branch, and maybe 1-2 backup plans)
Step 3A: If you get stuck, brainstorm strategies
If you feel like you have no idea what to do, stop and go meta. Try spending 10 minutes brainstorming strategies that might help.
Examples of strategies might include:
I recommend setting a literal 10 minute timer, and trying to come up with at least 10 strategies.
Step 4: Predict Surprises
For each step in your plan, write down the how likely the plan is to go the way you expect. (i.e. 10% likely, 50% likely, 90% likely, etc).
For step, ask "Does this seem like an area I expect to get surprised? What other things might happen instead of my main prediction?"
You might notice that you actually think there's a second outcome that feels more likely than your original plan. If so, maybe update your plan + predictions.
When you are done, right down your overall probability that your plan will work.
Step 5: Execute the Plan
Once you have a plan written down, and you've thought about how likely you are to be surprised... execute the plan!
...
What happened? Did you get it right on the first try? If so, yay! If not, think more, and see if you can come up with a new plan.
Did you get any “surprise surprises” (as opposed to “surprises in a place you kinda expected to get surprised?”)
Step 5b: Try earnestly 3 times, then, idk screw around
If your plan didn't work, go back to the drawing board and try again. You've lost some imaginary points from Raemon, but, you can still try again to make a followup plan. If your assumptions were wrong, re-examine them and think about what else might work.
Each time you try/fail, I recommend setting another 10 minute timer for "meta-strategy brainstorming."
If you've tried this earnestly 3 times, after the 3rd time, I think it's fine to switch to just trying to solve the level however you want (i.e. moving your character around the screen, experimenting).
Step 6: Debrief / Meta Reflections
Whether you got the answer right or wrong, now you stop to ask "how did I do? Could I have done better?"
Set a 10 minute timer, and brainstorm potential takeaways. Some possible prompts:
Followup
I think it's worth doing this exercise a couple times until you've gotten the hang of it. You can do it on different puzzle games.
The next step after that is "try making some actual real life plans for goals that feel somewhat hard/confusing", and reflect on which parts (if any) seem to transfer. I'm working on some explicit exercises for this, but so far it seems to depend a lot on an individual's goals. So far, this process seems to take a few days rather than a few hours.
I'm not actually 100% sure how to do this because I've already seen the intro cinematic and it only shows once per user. But I believe it was possible to skip it at the last workshop I ran.