Review on 🎮 SAFFUN 2 Pack 2.4 GHz Wireless USB Controller: Compatible with SNES Games for PC, Mac, Linux, Genesis, Raspberry Pi Retropie - Retro Super Classic Controller with Multicolored Keys by Steve Harris

These controllers have many benefits—fast and reliable $15 wireless controllers are hard to beat! If only they used standard controller button assignments! If they were mapped like any standard xInput or other PC controller, they wouldn't require a custom setup every time to play regular games. In fact, everything appears normal except for the A, B, X, and Y keys, which are upside down. The X at the top behaves like the standard "confirm" button in PC games, which is very strange. Edit: I noticed something else. These controllers come with a warning not to leave them charging for more than 2 hours. This suggests that they are using an old type of rechargeable battery and not a lithium-ion battery, which is another disadvantage for them. Might look for another similar pair but this gets it right.