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About
Reach the hidden word before your opponent — using nothing but how CLOSE your guesses are in meaning. A fresh kind of word-guessing duel.
Type any word and see its HEAT (0–100): how semantically close it is to the hidden target. The nearer the radar's centre, the hotter. Related words link up into a living "constellation of meaning." Follow the heat, read the connections, and close in.
WHAT MAKES IT DIFFERENT
- Win by meaning, not letter count or category
- A heat radar where every guess sits by its closeness to the answer
- Draft 3 self-insight items that change how you read the board
MODES
- vs AI — four strengths (Easy / Normal / Hard / Expert).
- Online — 1-on-1 via Game Center
- Nearby — two devices in the same place
FEATURES
- Deterministic, on-device scoring from 300-dimension meaning vectors. No LLM, no server — instant and consistent
- The answer changes every game, so there's nothing to memorize
- Japanese / English
- Built-in How-to-Play in Settings
Note: multiplayer is played between players using the same language setting.
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What's New in Semantra
v2.01
October 10, 2026
- Reviewed definitions and classifications in both languages to reduce meaning mismatches and inaccurate categories. - Fixed cases where a word with a different meaning but the same English spelling was incorrectly accepted as the answer. - Refined heat scores, hints, and related words to better reflect each word’s intended meaning.
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Unlock all items, Hard & Expert, and online






