Closer A calibration game that measures how you perceive reality

Name: Closer A calibration game that measures how you perceive reality
Availability: InStock
Author: ryandervakos

by ryandervakos·Feb 23, 2026·3 points·0 comments

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AI Analysis

●●SolidEye CandyRabbit HoleBig Brain

Calibration game feeds behavioral dataset on human perception blind spots.

Strengths

•Elegant premise: gamifying estimation accuracy while collecting real behavioral data on systematic biases.
•Multiplayer + AI duel modes create replay incentive beyond solo practice.
•Insights page surfacing global patterns across players is genuinely interesting angle for behavioral research.

Weaknesses

•Crowded category: Metaculus, Superforecasting, and Kalshi already gamify estimation with leaderboards.
•Unclear if 200+ questions are sourced rigorously or curated for engagement—sources page exists but questionable reliability matters for a calibration tool.

Post Description

Closer is a calibration game where you estimate real-world statistics and compete against AI or friends in real-time. Every answer quietly feeds a dataset on human perception: what we overestimate, underestimate, and where our blind spots are.

200+ questions across 8 categories, ELO rankings, and an Insights page that surfaces patterns across all players. Built with React & Supabase

Happy to hear feedback on the question design or ideas for the behavioral data.