A few days ago, Union Arena officially announced a new collaboration with Steins;Gate. The announcement was made through Union Arena’s official X account.
According to the announcement, more details about the collaboration will be revealed gradually. While no specific cards, release dates, or featured characters have been confirmed yet, fans can likely expect cards featuring characters from Steins;Gate.
◥◣◥◣ 参戦決定 ◢◤◢◤
— 【公式】UNION ARENA（ユニオンアリーナ） (@UNION_ARENA_TCG) March 1, 2026
『シュタインズ・ゲート』が #ユニアリ に登場📱
Xにて順次情報を公開していきます。
お楽しみに！ #シュタゲ #UNIONARENA pic.twitter.com/C2jL8aOSHB
Union Arena is a crossover trading card game published by Bandai that brings together characters and worlds from a wide variety of anime, manga, and video game franchises into a single competitive card game. The game already features collaborations with series such as Jujutsu Kaisen and Bleach, among many others.
Each series receives its own themed card set, allowing players to build decks centered around their favorite franchises while using a unified ruleset shared across all titles in the game. Since its launch, Union Arena has collaborated with numerous popular series, making it a growing hub for crossover battles between different fandoms.
More information about the Steins;Gate collaboration, including card previews and release details, is expected to be announced soon.
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