Blue Prince · Mt. Holly Estate

Constellation Reference

What the night sky shows when you look through the telescope

On first entry to the Observatory this run, roll a d6. The die tells you which constellation is visible in tonight's sky. Apply its effect immediately.

Re-entering the Observatory later in the same run grants no additional roll — unless you are holding the Telescope on re-entry (see below).

1 North Star The pole above Gain 1 coin.
2 The Twins A pair of lights Place 2 trunk tokens on the Entrance Hall tile. Open them on entry as normal.
3 The Slice A wedge of stars Gain 3 steps.
4 Diamondus Minor The lesser gem Gain 1 gem.
5 Clavis, the Key Keeper of locks Gain 1 key.
6 The Sail Fair winds today For the rest of this run, Commissary, Kitchen, and Locksmith prices are 50% off (round up).
Telescope item — first Observatory entry If you hold the Telescope when you first enter the Observatory this run, roll d6 twice and apply both effects. If the two rolls match, the effect fires twice (one-shot effects stack; The Sail does not double).
Telescope item — re-entry to the Observatory If you first entered the Observatory without the Telescope but later acquired it, you may return to the Observatory and roll d6 once on re-entry. This re-entry roll is granted only by the Telescope and only once per run. Without the Telescope, re-entry grants no roll.
Planetarium — next run's first Observatory entry If you ended your previous day voluntarily in the Planetarium, your first Observatory entry on this run rolls d6 twice. This stacks with the Telescope — Planetarium carry-forward + Telescope on first entry means roll three times.