A new wave of Pokémon Gen 10 leaks has surfaced ahead of Pokémon Day 2026, and the scale looks far bigger than expected. Early development screenshots and internal build footage point toward Pokémon Wind and Pokémon Wave as the next mainline entries in the franchise.
While The Pokémon Company has not officially confirmed these details, multiple leak reports describe a massive island region, fully open-world gym progression, a brand-new battle mechanic, and a long list of returning Pokémon.
Here’s everything currently circulating from the Gen 10 build leaks.
A Massive Archipelago Region Inspired by Southeast Asia
Leaked map comparisons show Gen 10 taking place across a sprawling archipelago. Instead of one continuous landmass, players appear to travel between large tropical islands connected by open ocean.
Screenshots reveal:
- Dense jungle interiors
- Volcanic terrain
- Swamp biomes
- Coastal cities
- Coral reef environments
Underwater exploration appears to play a major role. Several clips show Pokémon swimming in deep-sea areas, strongly suggesting a full 3D dive mechanic may return in expanded form.
If accurate, this would mark the most ocean-focused design in mainline Pokémon history.
The Largest Pokémon Capital City Yet
One leaked screenshot shows a massive multi-tiered capital city with vertical design, dense architecture, and neon lighting.
Unlike some past entries where cities felt like decorative hubs, this urban area appears explorable and layered. Elevated walkways, high-rise districts, and detailed lighting effects suggest Game Freak is aiming for a more immersive city experience this time.
If the final version matches the build footage, Gen 10 could deliver the most ambitious city in the series so far.
Leaked Gym Types for Pokémon Wind and Wave
According to widely shared leak reports tied to early builds, players will once again challenge eight gyms in full open-world order.
The leaked gym types are:
- Grass
- Poison
- Flying
- Fighting
- Dark
- Normal
- Steel
- Fairy
Reports suggest players can tackle these gyms in any sequence, similar to the freedom introduced in Gen 9. Some additional challenges reportedly take place in research labs focused on specific Pokémon types.
Gym leaders have not been revealed yet.
Returning Pokémon Leaked for Gen 10
Multiple development screenshots and biome test clips show familiar Pokémon appearing in early builds of Pokémon Wind and Wave. The following Pokémon have surfaced across leaked footage, listed without implied order:
Iconic Franchise Staples
- Pikachu
- Charizard
- Lucario
Classic Early-Gen Returns
- Butterfree
- Machamp
- Gyarados
Evolution Lines and Mid-Gen Appearances
- Aron
- Lairon
- Shinx
Water and Ocean Biome Pokémon
- Luvdisc
- Lumineon
- Dondozo
Mechanics-Linked and Environment Sightings
- Rotom
- Charjabug
- Sandygast
- Mudsdale
Some leaks suggest updated models for Pikachu, Charizard, and Lucario. Rotom reportedly appears connected to a new traversal device that replaces the traditional bike system.
Because these images come from early builds, the final Pokédex may still change before release.
A New Battle Mechanic Called “Majin”
Leaks reference a brand-new mechanic internally labeled Majin.
Clips show a Pokémon briefly distorting before a cloud-like visual effect forms above it. The exact function remains unclear, but theories suggest it may involve temporary power shifts, altered states, or weather-based transformations.
Majin appears separate from Mega Evolution and Terastallization, signaling a completely new system for Generation 10 battles.
Built for Nintendo Switch 2
The leaked assets reportedly come from a mid-2024 debug build. Some textures look unfinished, which aligns with early development footage.
Multiple insiders claim Pokémon Wind and Wave target the next-generation Nintendo hardware. If true, the added processing power would help support:
- Seamless island traversal
- Larger city environments
- Improved lighting and water physics
- Stable open-world performance
After Scarlet and Violet’s performance issues on older hardware, Gen 10 appears designed with stronger system capabilities in mind.
When Could Pokémon Gen 10 Be Announced?
Pokémon Day falls on February 27, 2026, and many fans expect a major reveal. While Pokémon Legends: Z-A may take the spotlight, the growing consistency of Gen 10 leaks suggests a teaser could appear.
As always, none of this information has been officially confirmed. However, the volume of footage and repeated Pokémon sightings indicate that Pokémon Wind and Wave may represent one of the biggest generational shifts the franchise has attempted.
If the leaks hold true, Gen 10 will expand exploration, deepen city design, and introduce a brand-new battle mechanic — all while bringing back familiar favorites.
More updates will follow as Pokémon Day approaches.
