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Previously, you had to unlock the Japanese versions via cumulative playtime. The update removes that grind, allowing you to switch between Contra (US) and Gryzor (JP) instantly from the game select menu.
The eShop update is delivered as a 150MB patch. The scene NSP (Nintendo Submission Package) is a repacked version that includes all previous updates rolled into one. This is crucial for users who downloaded the original base NSP from a non-legitimate source, as it prevents "corrupted data" errors.
This is where the article must take a sober turn. While discussing NSP updates is technically neutral, the act of downloading and installing them without owning a legitimate license violates copyright law in most jurisdictions.
The Gray Area of Updates:
Nintendo’s Stance: Nintendo aggressively pursues DMCA takedowns against sites hosting Switch NSP files, including updates. In 2022, they won a $2.1 million judgment against the ROM site RomUniverse. Updates are considered derivative works, thus protected.
The Preservation Argument: Proponents argue that when Nintendo’s eShop for the Switch eventually shuts down (as they did for Wii U and 3DS in 2024), NSP updates become the only way to access patched, superior versions of games like the Contra Anniversary Collection. Without archival of these updates, the best version of the emulation—with reduced lag and bug fixes—would be lost to time.
Konami usually excels here, and Contra is no exception. Contra Anniversary Collection Switch NSP UPDATE
Konami did not maintain a public live blog for these patches, but data miners and CFW testers have confirmed the following changes packed into the 250MB~ update file:
The Contra Anniversary Collection was a solid 7/10 at launch. With the v1.1.0 update, it climbs to a 9/10, rivaling M2’s ShotTriggers series in emulation quality. For the Switch homebrew community, the availability of the Contra Anniversary Collection Switch NSP UPDATE ensures that even offline users can enjoy the most polished version of Konami’s legendary shooter series.
Stay tuned to your favorite NSP tracker for update v1.1.0 (Title ID: 0100DA400E93A800).
Remember: Support the developers where possible. The Contra Anniversary Collection is frequently on sale for $4.99 on the eShop. If you enjoy the game, buy the official version to show Konami that classic franchises matter.
Contra Anniversary Collection Switch NSP UPDATE
The Contra Anniversary Collection has just landed on the Nintendo Switch, and it's a must-have for any fan of the iconic action series! This comprehensive collection brings together six classic Contra games, including Contra, Contra III: The Alien Wars, Contra IV, Contra: Rogue Corps, Contra: Shattered Soldier, and Contra: Hard Corps. Previously, you had to unlock the Japanese versions
What's New:
Collection Includes:
Features:
UPDATE: NSP Version
The NSP version of the Contra Anniversary Collection has been updated with the latest patches and improvements, ensuring a smooth and stable gaming experience.
Download Contra Anniversary Collection Switch NSP UPDATE Now! Konami did not maintain a public live blog
Get ready to blast your way through hordes of aliens and experience the best of the Contra series on the Nintendo Switch. Download the Contra Anniversary Collection NSP UPDATE now and relive the classic action!
File Details:
Disclaimer: This post is for educational purposes only. We do not condone piracy and encourage users to purchase the game from the official Nintendo eShop.
Contra lives and breathes on precision. Small improvements to input timing, save stability, and menu flow aren’t just maintenance — they protect the core thrill: the rush of clearing a checkpoint, learning a boss pattern, and nailing a no-death run. This update preserves that old-school difficulty while trimming frustrations that used to feel unfair.
Early versions had limited screen filters. The updates added: