Games to play with AI, with rules you can paste

An AI chat makes a good partner for any game that runs on words and turns. It keeps score, invents riddles, asks yes or no questions and runs a text adventure for as long as you want to play. Below are the games that work best, with rules you can copy straight into AlgoChat.

All of them are free and need nothing but a browser. They also work well with friends: one phone, everyone shouting guesses.

Start chatting, it's free No sign-up. Works in your phone's browser.

Try one of these

Games that work well in chat

20 questions. Either side can think of the answer. Pick a category to keep it fair.
Guess the number. The chat picks a number from 1 to 100 and answers "higher" or "lower".
Trivia with scoring. Choose a topic and difficulty. Good for revision too: ask for questions from your biology syllabus.
Word ladder. Change one letter at a time to get from one word to another, such as COLD to WARM. The chat checks each step is a real word.
Would you rather. It asks, you answer, and it asks one follow-up about your reasoning.
Riddles. Ask for easy ones for kids or lateral thinking puzzles for adults.
Text adventure. You type commands, and it describes the world and keeps track of what you carry.
Emoji puzzles. Films, songs, countries or book titles told in emoji.

Rules you can paste

Clear rules stop the game drifting. Copy one of these, change what you like and send it:

Word ladder: "Give me a start word and an end word, both four letters. I change one letter per turn. Reject any step that is not a real English word. Tell me the shortest solution only when I finish or give up."
Guess the number: "Pick a whole number from 1 to 100. Answer only higher, lower or correct. Count my guesses and tell me the total when I win."
Would you rather: "Ask me would-you-rather questions about everyday life, one at a time. After I answer, ask why, then react in one sentence before the next question."
Trivia: "Ten questions on a topic I pick. Four options each. One point per right answer, shown as a score line at the top of every reply."

Making games fair and fun

There is one quirk. In 20 questions or guess the number, the chat has no hidden notepad. It does not lock in a secret answer the way a person would. It keeps its answers consistent with what it has already said, and you can ask it to explain its pick at the end so you can check the clues held up.

Ask for a score line or turn count at the top of each reply so nothing gets lost. If a game is too easy, say "harder" mid-game. To practise a language, play any of these in that language and ask it to correct your mistakes as you go.

What it cannot run

AlgoChat plays turn-based games in text. It cannot run real-time games like Pong or Snake, keep a live timer, or show moving graphics. It can write the code for a simple browser game, which you then save and open on a computer, but it cannot run that code itself. For a text adventure, it can draw a map of the rooms you have visited as a diagram.

Questions

Are these games free?

Yes. AlgoChat is free with no account. Open the chat, paste a set of rules and start playing.

Is the AI fair at 20 questions?

Mostly. It keeps its answers consistent with earlier clues, but it does not secretly store an answer. Ask it to reveal and explain its pick at the end.

Can I play chess with it?

You can play by typing moves in chess notation, but it can lose track of the board. Ask it to restate the position every few moves, and use a chess app for serious games.

Can it make a game I can play on my own?

It can write the code for a small game, such as a quiz page or a simple puzzle in HTML and JavaScript. You run it yourself. AlgoChat cannot run code.

Can I come back to a game later?

Yes, in the same browser. The chat keeps the score and the story so far. Clearing site data or switching device starts a new chat.