The short version
A free puzzle game that makes special-relativity effects directly playable.
From the HackerLinks archive
Velocity Raptor
A free puzzle game that makes special-relativity effects directly playable.
At a glance:
First seen:2026-09-11
Last seen:2026-09-11
Times seen:1
Website:testtubegames.com
Why it caught our attention
A commenter recommended the simulation and singled out favorite educational levels.
Where it surfaced on Hacker News
2026-09-11
“Velocity raptor is a free game that accurately simulates the effects of special relativity. It slows down the speed of light to 3m/s and you solve puzzles as a cute dinosaur.”
tristanj · recommendation · evaluated
Direct HN comment
Show HN: What if the speed of light was 5 km/h?