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Group of Death

WorldCup bracket predictor with shareable URLs

Details

External ID
48414226
Source
HN
Company
—
Product
Group of Death
Website domain
groupofdeath.gg
Launched
June 5, 2026
Cohort
—
Upvotes
6
Upvotes percentile
0.31420765027322406
Tags
—
Fetched at
Sept. 7, 2026, 9:26 p.m.
Updated at
Sept. 7, 2026, 9:26 p.m.

Description

I couldn't find a nice worldcup bracket visualizer out there so ended up building one. It's nicer than the ones I saw out there. There is no login, no ads, runs client side, uses localStorage and all the state is encoded in the URL itself and you can share it.The calendar feature is nice. I wanted to build my own schedule for the games I was interested in. There is full calendar that you can subscribe to as well, that gets updated as the fixtures get decided. I also wanted to be able to interactively change things and visualize the whole knockout stage.All the state is in the URL fragment. It's a handrolled compact byte format. About 203 bytes, ~217 characters. The URL has the full snapshot so the link you share always renders the same brackets. It's versioned so I can change the format and not break links out there.At this point it does everything I wanted it to do for me. Might be some real howlers in there. Let me know if you spot one.

Enrichment

Theme
interactive maps and geospatial visualizations
Vertical
Media & entertainment
Function
Analytics & BI
Audience
B2C
AI stance
Not AI
Project type
Hobby / open-source project
Normalized one-liner
world cup bracket prediction tool
Manually corrected
False

Could you build this?

Yes A tournament bracket simulator with client-side state encoded in URL hash/query parameters and localStorage is an ideal weekend frontend project easily vibe-coded.

Discussion

5 comments analyzed.

Concerns raised: Simulations vary wildly on each run, Unclear if meant for tracking actual matches vs predictions

Feature requests: Interactive bracket visualizer, Custom calendar for specific fixtures

Competitors

Other products that read as similar to this one — 32 launches clear the similarity bar, closest 8 shown.

Attention rank: #17 of 33 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 217 days after the earliest competitor.

Other launches for this product

Same idea, different domain

Nobody's really built a analytics & bi tool for Legal yet.