2026-08-31 · retro-review
Columns (1990) — When a Hewlett-Packard Engineer's Practice Code Became Jewels in Sega's Hands
In 1990, Sega released Columns, a falling-block puzzle sharing Tetris's silhouette but a completely different clearing grammar. It wasn't made by a game studio — it was written by a Hewlett-Packard engineer as practice code, which reached home consoles worldwide after six months of licensing talks.
