There’s no doubt that the DualShock 4 is an infinitely superior controller to its PlayStation 3 counterpart, providing tighter sticks, vastly improved triggers, and a much more ergonomic shape. As such, it’s not overly surprising that gallant gamers would want to use the overhauled device with From Software’s challenging action adventure Dark Souls II. However, if you happen to prefer the fresh peripheral, you may want to ensure that your PlayStation 4 is properly powered down before using it with the aforesaid title – or any game for that matter.

Indeed, while the sequel to Bandai Namco’s borderline impossible role-playing smash works perfectly with Sony’s new input device, if the peripheral is also synced to your super machine, then there may be trouble more maddening than an unbeatable boss lurking ahead. One member on the Rllmuk forums noticed that after a particularly challenging session with the recently released game, their DualShock 4 controller had also been busy buying goods on their next-gen console.

“Playing Dark Souls II on the PS3 with my PS4 controller, I leave my PS4 on as it is downloading updates,” the user explained. “Turns out that the controller can control both [platforms] at the same time. So my inputs on Dark Souls II buy me FIFA 14 on the PS4 (a game that I already own) and a British Cop skin pack (I don't even know what this is). I got an email on my tablet telling me so.”

Naturally, as this comes down to user error, Sony is not offering a refund at this time. You should use this story as a lesson moving forwards, though: if you’re going to use your PS4 controller on the PS3, make sure that your next-gen console is completely unplugged first. Additionally, it’d probably be wise to turn on password authentication on the PlayStation Store, further preventing any potential purchase mishaps in the future.