Semantris: what its AI actually does
Google's word-association arcade game — the oldest live entry in the index and still the only one built as an action game rather than a daily puzzle.
Quick answer: Semantris scores your guesses by meaning rather than spelling. The model is doing real work every turn, but it never speaks — 6/10. It is free to play, no account needed, on the web. Verified live August 13, 2026.
How to play Semantris: Arcade or Blocks?
Open Google's Semantris → and choose a mode on the start screen. Arcade asks for quick word associations under time pressure; Blocks gives you a slower puzzle. They use visible words rather than one hidden daily answer.
In our Arcade check on October 10, 2026, the tutorial highlighted Museum. We entered art; the game ranked Museum as the most associated word among those on screen. That is an example from the tutorial, not a secret answer or a universal winning clue. A clue can relate to more than one word, so think about the entire board.
Google's experiment description explains that its language model chooses related words from those in play. If you want a hidden-word puzzle instead, compare Contexto-style ranks and Semantle-style similarity. Our Semantris alternatives guide separates those formats.
Play instructions updated October 10, 2026 after a browser check. The AI score and dataset record below retain their August 13 verification date; this play check does not re-verify every scored field.
Score breakdown
The AI Involvement Score measures how much the AI does while you play — not how good the game is. Full rubric here.
A model executes while you are playing.3/3
It returns numbers, ranks or tiles — never language of its own.0/2
Your guess is judged by meaning, not spelling.2/2
No model-derived hints we could verify.0/1
Every player gets the same behaviour; the AI holds no state about you.0/1
The operator names it: Universal Sentence Encoder.1/1
Without the model-disclosure point: 5/9.
The record
| Developer | Google Research |
| Launched | 2018 |
| Model disclosed | Universal Sentence Encoder |
| Daily puzzle | no |
| Unlimited play | yes |
| Difficulty levels | not verified |
| Multiplayer / challenges | not verified |
| Themed or custom games | not verified |
| Account required | no |
| Price | free |
| Playable archive | no |
| Platforms | Web |
| AI type | Semantic scoring |
| Last verified | 2026-08-13 |
We could not verify: Difficulty levels, Multiplayer / challenges, Themed or custom games. These are recorded as unknown rather than guessed, and unknown counts against the score.
Download the raw record (games.json) →
Play it
https://research.google.com/semantris/ — confirmed reachable on 2026-08-13. We do not take payment for placement and we do not use affiliate links.
Others like it
Games in the index that use AI the same way, with their scores:
Semantle7/10The canonical semantic word game and still the benchmark: every guess is scored by cosine distance in a disclosed word2vec space, with hints and a… Semantle (legacy build)7/10David Turner's original build is still served, including the team/room co-op mode the current semantle.com dropped. סמנטעל (Semantle Hebrew)7/10Hebrew adaptation on puzzle #1635, with optional sign-in that unlocks hints and stats and a tip jar rather than a paywall. Linxicon7/10Bridge two random words by adding words that clear a 40% cosine-similarity threshold — the most explicit published scoring rule of any game in the…The one where the AI talks back
Yapword is one of 9 live word games where the AI produces language during play, and one of 3 that respond to how you personally played. Free daily, no account.
Frequently Asked Questions
Does Semantris really use AI?
What AI model does Semantris use?
What could you not verify about Semantris?
Keep exploring
See the full AI Word Game Index (77 records), browse every profiled game, or read the ranked pick of the best AI word games.