From NEC Retro

A HuCard of The Kung Fu, one of the first commercially available HuCards.

The HuCard (ヒューカード), also known in North America and Europe as the TurboChip, is the primary storage medium for PC Engine, TurboGrafx-16 and PC Engine SuperGrafx games.


The design of the HuCard follows after the "Bee Card", which Hudson Soft had initially designed for MSX computers. While card-based storage mediums have already been attempted with video game systems such as Sega's My Cards, HuCards were designed to house larger ROM sizes than prior contemporaries, with the first HuCards supporting 2 megabits (256 kB) and later HuCards supporting sizes as big as 8 megabits (1 MB).

The PCB of a HuCard is stored in the black area of the card, which has 38 connector pins and varies in size depending on the storage capacity, and is inserted into a console face-up - the rest of the card is merely plastic and shows the sticker that is exposed when the card is in use, while the back side of the card typically has safety instructions printed on it as well as a space for the user to write their name with a waterproof pen. Due to their flat design, HuCards were shipped in specially-designed jewel cases much like those used for CDs.

However, some HuCards may have additional hardware in the sticker area of the HuCard to contain additional hardware, such as further increasing the ROM size to 20 megabits (2.5 MB), at the expense of being slightly thicker than regular HuCards. These are known as "ROMRAM HuCards" on the back. The only games known to contain additional hardware in the sticker area are Street Fighter II': Champion Edition and Populous.

HuCards were not just used to store software, but also for certain peripherals, such as the Ten no Koe Bank which also comes in a "ROMRAM HuCard" containing a CR2032 battery to retain save data, and System Cards which are used to contain the boot ROM as well as additional hardware to run software designed for CD-ROM² systems.

Official HuCard designs

Unofficial HuCard designs