This is a Super Mario Question Block–Shaped Switch Cartridge Storage Case.

       Its design draws direct inspiration from the iconic yellow question block in Nintendo’s classic game Super Mario—featuring the signature bright-yellow cube, white question mark, and polka-dot accents—perfectly recreating the in-game item box while evoking a nostalgic retro gaming vibe.

• Slide-Open Design: The yellow top cover slides open, faithfully replicating the interactive “slide the top brick to reveal an item” mechanic from the game and making it easy to access the Switch cartridges stored inside.

• Cartridge Storage Function: The case can hold Switch game cartridges; as shown in the image, a red-and-black Switch cartridge is already placed inside, seamlessly blending gaming memorabilia with practical storage.

• The question mark and polka-dot elements are supplied as separate pieces; simply apply them to the case using adhesive. Attach the sloped surfaces toward the interior of the case.