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Collection: NES Upgrades

Enhance your classic gaming experience with our NES Upgrades collection. At CastleMania Games, we offer a curated selection of premium accessories and games designed to elevate your Nintendo Entertainment System. Rediscover the joy of retro gaming with enhanced reliability and superior gameplay.

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31 products

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Out of stock (18 products)

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NES (Nintendo Entertainment System) (28 products)
SNES (Super Nintendo) (4 products)
Game Boy/ Game Boy Color (1 product)
Game Boy Advance (1 product)
Sega Genesis (1 product)

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Cartridge Adapters (1 product)
Consoles (3 products)
Controllers (3 products)
Controller Adapters (2 products)
Development and Testing (2 products)
Game (11 products)
Replacement Housing (1 product)

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NES (Nintendo Entertainment System) (28 products)
SNES (Super Nintendo) (4 products)
Game Boy/ Game Boy Color (1 products)
Game Boy Advance (1 products)
Sega Genesis (1 products)

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Cartridge Adapters (1 products)
Consoles (3 products)
Controllers (3 products)
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Development and Testing (2 products)
Game (11 products)
Replacement Housing (1 products)

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31 products

Log Jammers - Complete In Box With Manual (NES)

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Log Jammers - Complete In Box With Manual (NES)

Regular price $59.99 USD

Sale price $59.99 USD
Unit price per

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Little Medusa - Complete In Box With Manual (NES)

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Little Medusa - Complete In Box With Manual (NES)

Regular price $59.99 USD

Sale price $59.99 USD
Unit price per

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Retro Game Restore NES Replacement Housings (Original Gray)

Retro Game Restore NES Replacement Housings (Original Gray)

Regular price $119.99 USD

Sale price $119.99 USD
Unit price per
Alwa's Awakening: The 8-Bit Edition (Digical)

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Alwa's Awakening: The 8-Bit Edition (Digical)

Regular price $19.99 USD

Sale price $19.99 USD
Unit price per

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NES Expansion Audio Board

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NES Expansion Audio Board

Regular price $11.99 USD

Sale price $11.99 USD
Unit price per

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RetroN 2 HD Gaming Console

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RetroN 2 HD Gaming Console

Regular price $79.99 USD

Sale price $79.99 USD
Unit price per

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Hyperkin HyperConvert 83 60-Pin (Famicom®) to 72-Pin (NES®) Cartridge Adapter

Hyperkin HyperConvert 83 60-Pin (Famicom®) to 72-Pin (NES®) Cartridge Adapter

Regular price $14.99 USD

Sale price $14.99 USD
Unit price per
Old Towers - Complete In Box With Manual (SNES)

Old Towers - Complete In Box With Manual (SNES)

Regular price $59.99 USD

Sale price $59.99 USD
Unit price per
RetroN 5: HD Gaming Console

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RetroN 5: HD Gaming Console

Regular price $179.99 USD

Sale price $179.99 USD
Unit price per

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Cadet Premium Controller - NES

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Cadet Premium Controller - NES

Regular price $12.99 USD

Sale price $12.99 USD
Unit price per

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Retro Fighters JAB Next-Gen NES, PC & Mac Controller

Retro Fighters JAB Next-Gen NES, PC & Mac Controller

Regular price $24.99 USD

Sale price $24.99 USD
Unit price per
River City Ball & Brawl Bundle

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River City Ball & Brawl Bundle

Regular price $109.99 USD

Sale price $109.99 USD
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River City Street Basketball

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River City Street Basketball

Regular price $59.99 USD

Sale price $59.99 USD
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River City Fighting Legend

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River City Fighting Legend

Regular price $59.99 USD

Sale price $59.99 USD
Unit price per

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Chew Chew Mimic on NES

Sale

Chew Chew Mimic on NES

Regular price $44.99 USD

Regular price ~~$59.99 USD~~ Sale price $44.99 USD
Unit price per

Sale

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Welcome to the Castle!

Founded by lifelong gamers and collectors, it is our mission is to help you bring your favorite retro consoles out of the closet and attic (don't keep your games in the attic) and deliver modern quality of life improvements where we can.

Unlike generic marketplaces and mega-retailers, CastleMania is proudly boutique. Every product is hand-picked. Every order matters. And every customer is part of a growing community of gamers who know that authenticity, performance, and a little passion goes a long way.

We’re also trusted by the brands that make the best products in the business. CastleMania Games is an authorized retailer for HD Retrovision, EON, Retro-Bit, Retro-Time Hyperkin and more. Our catalog is packed with solutions you can count on, and our support team is made up of real people who speak your language: scanlines, RGB mods, and CRT vs HDMI debates included.

(844) 994-2637
support@castlemaniagames.com
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