Platforms and languages
iOS and Android, free with in-app purchases. System languages are Japanese, English, Simplified Chinese, Traditional Chinese, and Korean. Card languages omit Traditional Chinese.
Digimon Alysion is a mobile app. The game-site footer lists the genre as online card game, the price as free-to-play with in-app purchases, and the platform as mobile. The promo video splits that into App Store and Google Play.

Stores
| iOS | Android | |
|---|---|---|
| Store | App Store | Google Play |
| How the news says to join | Tap GET | Tap Install or Pre-register |
| Price | Free, with in-app purchases | Free, with in-app purchases |
| Listing note | Japan App Store listing requires iOS 15.0 or later | Play listing is linked from the Japan news post |
The Japan App Store listing names BANDAI Co., Ltd. as the developer and lists the category as cards. It also describes a daily free pack and a tutorial that teaches card layout while you play the story. That is store-page copy, not a rate table.
Languages
The promo video's game-info block splits system language from card language. Traditional Chinese is in the system list and not in the card list.
| Japanese | English | Simplified Chinese | Traditional Chinese | Korean | |
|---|---|---|---|---|---|
| System | Yes | Yes | Yes | Yes | Yes |
| Cards | Yes | Yes | Yes | No | Yes |
The Japan App Store listing names the same five languages for the app: Japanese, Simplified Chinese, Traditional Chinese, English, and Korean. It does not repeat the card-language split. Use the promo block for that split.
The release line on that same promo is planned for 2026. Read the release window before you treat any store calendar day as the launch.