Arknights: Endfield teams up with Happy Lemon for U.S. promo

Arknights: Endfield is getting the kind of real-world crossover that actually gives players something back: themed Happy Lemon drinks, limited-edition merch, reward codes for the game, and a live fan event in the United States. The promotion runs from May 13 through June 14, 2026, and it is rolling out across Happy Lemon stores nationwide, so this is not just a one-off store stunt tucked into a single market.

The menu tie-in leans hard into the game’s cast, with drinks inspired by Perlica, Zhuang Fangyi, Ardelia, and Last Rite. Alongside the drinks, qualifying purchases can unlock collectible extras such as coasters, cup sleeves, postcards, and other limited-edition items. For mobile players, the smartest part is the reward-code angle: you can walk out with physical merch and still get something useful inside Arknights: Endfield, which is a much better deal than a branded collab that dies at the cash register.

The biggest in-person stop is set for San Diego. Happy Lemon’s Convoy Street location is hosting a themed takeover on May 23, with on-site activities running from 2:00 to 4:00 p.m. PDT. That makes the location the clearest destination for anyone who wants the full crossover experience, especially if the collectible side of a collab matters as much as the food and drink angle.

The promotion also lands at a useful moment for the game’s rollout. Arknights: Endfield launched globally on January 22, 2026, on PlayStation 5, PC, iOS, and Android, and GRYPHLINE and Mountain Contour said the game passed 35 million pre-registrations ahead of launch. That kind of scale helps explain why a U.S. retail activation like this makes sense: it keeps the game visible, gives fans a reason to show up in person, and turns a standard beverage run into something that can still pay off back in the game.

For players deciding whether to make the trip, the value proposition is straightforward. The collaboration is doing more than slapping a logo on a cup, and the combination of drinks, collectibles, redeemable extras, and a Convoy Street event is exactly the sort of crossover that feels worth the stop while it is still active.