Running via flashcarts like Gateway 3DS or Sky3DS remains a topic of interest for those using legacy hardware methods rather than modern Custom Firmware (CFW). Both cards support the European (EUR) ROM, but their operational requirements and stability vary significantly. Flashcart Compatibility Comparison
While both cards can run the Super Smash Bros. EUR ROM, they use fundamentally different methods: Sky3DS Rev.2 (Blue Button) Review (Hardware) - GBAtemp Super Smash Bros 3DS ROM (EUR) (Gateway/Sky3DS )