A boy named Milo investigates disappearances in Bricktown, exploring randomized dungeons with a colorful, cartoonish world and a trio of Anima companions—Porcupint, Tanibo, and Reptibud—each with unique abilities.

The game blends roguelike exploration with deck-building combat, where players build and adapt a battle deck to face varied foes and seek exits.

Serial World released its first publicly playable demo for Steam Deckbuilders Fest, announced during Gamescom Future Games Show 2025.

The demo showcases accessible yet deep mechanics, lighthearted visuals, and thoughtful strategic depth.

Kakehashi Games, a Tokyo-based publisher founded in 2013, is handling publishing initiatives to connect East and West, having supported titles like Hollow Knight and Sea of Stars.

Gameplay combines turn-based combat with deck-building, emphasizing building a versatile deck for encounters as players explore for exits and clues.

Players recruit and deploy a team of Anima to battle in turn-based combat, using varied skills to adapt to each encounter.

Serial World is developed by Serial Project, a two-person team formed in 2023 by Takashi Maeda and Sho Kawasaki.

The demo timing aligns with Steam Deckbuilders Fest, with coverage noting the developers and Final Weapon newsroom contributions.

Eight Anima exist, each with different strengths to diversify strategies across battles.

The world features a colorful cast including friendly neighbors, merchants, and whimsical enemies like bouncing dragons and baby donuts, adding variety to encounters.

Serial Project, founded by former Level-5 staff, partnered with Kakehashi Games to release Serial World’s first public demo.