Disclosure: I built and run Alysion Field Guide , an independent English fan companion for Digimon Alysion. Not affiliated with, sponsored by, or endorsed by Bandai. Digimon and related names are trademarks of their respective owners. This is pre-launch information checked October 29, 2026 (UTC+8) — card pools, restrictions, Digidex counts, and breeding rewards can change when the app ships.

Two topics keep showing up in Digimon Alysion pre-launch chats: how to build a legal deck , and what “Digidex / breeding” actually means before anyone has a live client to verify.…