The best third-party GameCube Controller Adapters to buy for Super Smash Bros. for Wii U.
From personal experience, the Mayflash one is great! My school's eSports club bought one because I was the only one who had a official GCN adapter so now we have 2 setups for our Smash tourneys. No lag, and it's usable on PC!
KELUX works very well for me!
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