Polish inflection data: Słownik SJP.PL, version 20260901.
Source: https://sjp.pl/sl/odmiany/sjp-odm-20260901.zip
Selected license: Creative Commons Attribution 4.0 International (CC BY 4.0).
License: https://creativecommons.org/licenses/by/4.0/

Changes by Leaf Arcade: ten everyday noun families selected; thirty grammar prompts and English translations authored separately. Forms retain Polish diacritics. SJP.PL does not endorse this game.
The complete original archive is available beside this notice. Runtime content is a small selected subset.

Original README:

Słownik SJP.PL - wersja: odmiany słów

Słownik udostępniany na licencjach GPL 2, LGPL 2.1,
Apache 2.0 oraz Creative Commons Attribution 4.0 International

https://sjp.pl