Piprail

Steam brass card depot on a split-flap departures board.

Piprail is a boutique playing-card depot with three original solitaire-style protocols, each built around a different mathematical rule. Match pairs to a rotating beacon sum, clear prime rank gaps on a four-by-four platform, or forge triplets against a live blueprint that shifts between twin bands, rank runs, and suit bands. The split-flap home board tracks your daily dispatch, run statistics, and manifest log while brass-and-parchment visuals keep every departure gate distinct from classic pyramid or tri-peaks templates.