The game came out in November 2014 on 3DS. Just 6 years and 5 months later PAL carts are starting to die? IMO Nintendo should give everybody with a failing cartridge a free digital copy of the game on their 3DS. I'm sure 3DS carts will all eventually die, but any physical media should last at least 10 years. Anything less shows neglect on Nintendo's quality control.
Do your 3DS carts still work? I'll test mine and report my findings for both my 3DS and DS games. My last massive 3DS/DS cart test was 2 years ago and everything worked fine.
Edit: Apparently this is the result of a bad batch of carts, and no indication that 3DS games in general will start dying soon.Last edited by Cerebralbore101 - on 06 May 2021