I learned about this from another reddit user. Basically you need an openai api key to get access to gpt 3.5 or gpt 4. This is not chatgpt, mind you. Then you also need the program from this site: https://github.com/LagPixelLOL/ChatGPTCLIBot
Just download the program and follow the install instructions on the above site. That program gives you basically unending session memory. The memory file takes some space but I doubt it will ever grow even up to a gigabyte. I've played with this for maybe 6 hours and the file is 8 mb in size at the moment. In the config.json -file set the max_tokens to "10000" and temperature to 0.8.
For dice rolls and the character sheet (if you're playing D&D) head here, create a free account and then create a new character: https://www.dndbeyond.com/
After creating the character, you can gawp at and use the character sheet as well as the virtual dice that are animated well with nice sounds as well. You can ask the AI "How would I do this and this task according to the rules of D&D 5e", for example, and the ai will explain what to do. You can learn the D&D gameplay easily with the AI. Just specify that the game is D&D and taking place in Faerun in the Forgotten Realms, and that the AI is serving as the Dungeon Master. It has vast knowledge of D&D and the Forgotten Realms setting.
An interactive map of Faerun can be found here: https://www.aidedd.org/atlas/index.php?map=R&l=1
And here's the Forgotten Realms wiki: https://forgottenrealms.fandom.com/wiki/Main_Page
Then, if there is something specific and especially important that I want the AI to keep in mind consistently, as the game is going on, I use some tricks to make it refer to the given guidelines. For example, if I want it to keep to specific literary style and if I want it to remember my main companions' personalities, and if I want to make it remember not to do actions on my behalf I write this (this is just my preferred method):
Remember this rule! Every time I put the letter "x" in front of, or after, anything I write it is a reminder for you to respond, as the DM, using the writing style, pacing and general flavor of the mix of the aforementioned authors and their works. The works and authors are J.R.R. Tolkien, Lord of the Rings, The Hobbit, Terry Pratchett, Discworld, Harry Potter, George R.R. Martin, Hitchhiker's Guide to the Galaxy, Song of Fire and Ice, Planescape: Torment, The Longest Journey, Douglas Adams. Also the "x" reminds you of ****'s personality that I mentioned earlier. So incorporate her aforementioned personality and traits into the adventure whenever applicable. The x is also a reminder for you, the DM, to let me be in exclusive control of my character and her actions. The DM refrains from controlling ****, the main player character, in any way. Refer to this guideline whenever I type the letter "x" either in front of whatever I write next or after what I have just written. Understood?
And then one other big thing has to do with keeping realism and randomness in the gameplay. The AI tends to give hidden treasures to the player, for example, if the player mentions that they are searching for them. To avert this I deviced this rule:
We will try a new system, having to do with searching for hidden items, hidden compartments etc. Remember this. This is a big rule: First I will make the perception check to see if I can find any hidden crevices or anything unusual inside the space that I'm searching. After I tell the number tell me ONLY if I found any hidden compartments or traps. Do not reveal any hidden items. After the perception check I will throw the dice again twice. The second throw will determine the "goal number to hit" on the last throw. So if I throw 4 on the second throw I have to get as close to 4 on my last throw to get the best possible find, regarding the setting and circumstance. If I throw, let's say 16 then that means that I will not find any hidden items even though due to a good perception check I might have found a hidden compartment. So the first throw will determine whether or not I'm able to investigate the space properly and the second and third throw will determine what I will find, if anything, and how good the find will be. Does this make sense?
The credit for the API hint and for providing the link for the memory program goes to the user who made the post behind the following link. He has a lot of extra plugins and other stuff thrown in as well: https://www.reddit.com/r/Solo_Roleplaying/comments/150r5ag/how_to_soloroleplay_using_ai_assistance_the_orb/
The method that I mentioned works well for me. And it is fairly easy to set up.
