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Antimatter

Match the opposites (Mahjong solitaire mechanic)

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I love word association games. Here's a playable wordplay game where you match opposite word tiles. After playtesting a lot of mechanics, I think opposites play really nicely with Mahjong solitaire.The current generation of frontier LLMs can't make puzzles that get much more interesting than hot-vs-big-vs-fast. New inferences keep circling a small pool of concepts unless the prompting has a way to get the LLM into new territories of language. Puzzlemaking needs graph traversals.I made 20 levels algorithmically because I work with a huge semantic graph with over 100M edges, built from manual lexicography and millions of LLM inferences (various models). I keep exploring what can emerge from this graph. The puzzles are randomly selected; reload to see others.The front-end was built with Claude Code.Maybe someday I'll make this into a mobile game, increase the complexity and peril. If you are a gamedev, feel free to dissect it and borrow any parts.

HN · launched Mar 24, 2026 · 12 upvotes (top 36%) · 0 views

Niche: browser puzzle games · 310 launches, 26 in the last 7 days ▼ -7% · Explore this niche →

Category and tags
  • Horizontal
  • B2C
  • Not AI
  • Hobby / open-source project

Visit website ↗ Source listing ↗

More like this: all 310 launches in browser puzzle games →

Could you build this?

Yes The core game mechanics combine standard 2D/3D Mahjong Solitaire matching logic with a curated static dictionary of antonym pairs, easily built with web technologies like Three.js/Canvas and vanilla JS.

Discussion

5 comments analyzed.

Competitors mentioned: word2vec, mahjong games

Concerns raised: Word truncation on tall/mobile screens makes words unreadable, Opposite pairs feel arbitrary and lack rigor, Game shuffles automatically, removing challenge and incentivizing minimal options, Current opposite detection doesn't handle polysemy or complex semantic relationships well, Antonym scoring too simplistic for nuanced word relationships

Feature requests: Better text wrapping/display for mobile portrait orientation, Add penalty/dead-end states to increase strategic difficulty, Use cosine similarity closer to -1 for better antonym detection, Support broader semantic relationships beyond strict antonyms

Competitors

Other products that read as similar to this one : 507 launches clear the similarity bar, closest 8 shown.

Attention rank: #193 of 508 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 146 days after the earliest competitor.

Related data

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