1920s Paris Turns to Sand in Wonderfall, Coming to Steam This December

Parisian independent studio Attaboy Interactive has announced that Wonderfall, its atmospheric third-person narrative adventure game set in a collapsing 1920s France, will officially launch on PC via Steam on December 9, 2026.

Formerly titled Entropia, the story-driven title invites players to explore a decaying version of the French capital as it dissolves into endless sand. PC players interested in sampling the mechanics ahead of launch can access a free playable demo directly on the official Wonderfall Steam page.

Exploring a Disintegrating 1920s Paris

Wonderfall drops players into the center of Paris in 1920, where a catastrophic, unexplainable phenomenon known as Entropy is actively destroying the environment. Streets, historic monuments, and civilian lives are consumed as the land turns to fine sand, while mysterious metallic structures crystallize around ancient landmarks across the city.

• Developer: Attaboy Interactive
• Publisher: Attaboy Interactive
• Genre: Narrative Adventure / Third-Person Exploration
• Platform: PC (Steam)
• Release Date: December 9, 2026
• Estimated Playtime: 6 to 8 hours

Players step into the shoes of Léon, a young orphan gifted with the unique supernatural ability to manipulate and shape sand. As Entropy advances across the French capital, Léon learns to harness the very material destroying his home to traverse the ruins, avoid deadly threats, and uncover the truth hidden beneath the city’s decay.

Sand Manipulation and Environmental Traversal Mechanics

Gameplay in Wonderfall combines environmental puzzle-solving, traversal mechanics, and stealth encounters reminiscent of classic third-person action adventures.

• Sand Abilities: Léon shapes the surrounding terrain to open new paths, clear obstacles, and forge routes through dangerous ruins.
• Stealth and Survival: Players must sneak past corrupted entities created by Entropy while navigating high-tension platforming sequences.
• Iconic Landmarks: Exploration spans the historic Île de la Cité, ranging from sand-choked rooftops of Notre-Dame de Paris to crumbling underground metro tunnels.
• Shifting Environments: Neighborhoods dynamically transform under Entropy’s influence, opening forgotten interiors and hidden passages filled with backstory lore.

Narrative Depth and Voice Acting Production

Attaboy Interactive has crafted a story focused on theme, consequence, and the delicate relationship between humanity and nature. Featuring over 2,000 lines of fully voiced dialogue, the narrative unfolds through cinematic sequences, environmental clues, scattered documents, and character interactions.

Creative Director Sylvian Bouvier highlighted the work of the game’s core voice cast—including Ryan Highley, Jeanne Pajon, Paul Bandey, and Patrick Raynal—in bringing depth to the surviving residents of Paris.

The studio notes that while the narrative will answer the central conflict regarding Paris’s fate, it leaves room for interpretation, offering a complete playthrough experience lasting between six and eight hours.

Frequently Asked Questions (FAQ)

What is the release date for Wonderfall?

Wonderfall launches globally on PC via Steam on December 9, 2026.

Is there a playable demo available for Wonderfall?

Yes, a free playable PC demo for Wonderfall is available to download on Steam.

What platforms will Wonderfall be available on?

Wonderfall is currently scheduled for release exclusively on PC via Steam.

How long does it take to beat Wonderfall?

The narrative adventure takes approximately 6 to 8 hours to complete.