Double Dragon

Double Dragon
Developer(s)	Technōs Japan
Publisher(s)	JP Arc System Works NA/EU/AU Aksys Games
Series	Double Dragon
Platform(s)	Virtual Console, NES
Release date(s)	NES JP April 8, 1988 NA June, 1988 EU 1990 Virtual Console EU/AUS April 25, 2008 NA April 28, 2008 JP February 24, 2009
Genre(s)	Beat 'em up
Mode(s)	Single-player, Multiplayer (2)
Input methods	Wii Remote, GameCube Controller, Classic Controller
Compatibility	5 Perfect
GameIDs	FD2E01, FD2P01, FD2J01
See also...	Dolphin Forum thread Open Issues Search Google Search Wikipedia

Double Dragon is the story of Billy and Jimmy Lee, twin brothers who learned to fight on the cold, tough streets of the city. Their expert knowledge of the martial arts combined with their street smarts, has made them both formidable fighting machines. But now Billy is faced with his greatest challenge. Marian has been kidnapped by the Black Warriors, the savage street gang of the mysterious Shadow Boss! Using whatever weapons come to hand - knives, whips, bats, rocks, oil drums, even dynamite - Billy must pursue the gang through the slums, factories, and wooded outskirts of the city to reach the hideout for his final confrontation with the Shadow Boss... his brother Jimmy!

It is a spiritual and technological successor to Technōs' earlier beat 'em up, Nekketsu Kōha Kunio-kun (released outside of Japan by Taito as Renegade), but introduced several additions such as two-player cooperative gameplay and the ability to arm oneself with an enemy's weapon after disarming them. Double Dragon is considered to be one of the first successful examples of the genre.

NES Global Problems

Problems that may occur with any NES title on Dolphin are listed below.

DirectX with NES Games

Most NES games suffer strange graphical issues when using the DirectX backend with some graphics drivers; notably NVIDIA. This is a driver bug.

NVIDIA Title Corruption

As of 5.0-4869, the D3D driver bugs can be worked around by setting Ubershaders to Exclusive/Synchronous (Ubershaders). It's unknown what exactly is going on with the driver that's causing Exclusive Ubershaders/Synchronous (Ubershaders) to work properly.

This seems to have been rectified at some point, though it's unclear what resolved it.

Problems

This title does not have any additional game-specific problems.

Configuration

This title does not need non-default settings to run properly.

Version Compatibility

The graph below charts the compatibility with Double Dragon since Dolphin's 2.0 release, listing revisions only where a compatibility change occurred.

5.0

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5.0-20619 (current)

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Δ

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2.0 (r5384)

Compatibility can be assumed to align with the indicated revisions. However, compatibility may extend to prior revisions or compatibility gaps may exist within ranges indicated as compatible due to limited testing. Please update as appropriate.

Testing

This title has been tested on the environments listed below:

Test Entries
Revision	OS	CPU	GPU	Result	Tester
4.0-8445	Windows 7	Intel Core i5-3570K @ 3.8 GHz	NVIDIA GeForce GTX 760	Works OK. Requires EFB2RAM.	JMC47