J-Cart
type of game cartridge for Sega Genesis
The J-Cart is a special ROM cartridge developed by Codemasters for the Sega Genesis console. It held not only the game data but also came with two additional gamepad ports. This effectively allowed four players to play simultaneously without any extra adapters. The first J-Cart game, Tennis All-Stars, was released in early 1994.
Micro Machines 2: Turbo Tournament also allowed up to eight players to play simultaneously using up to four gamepads, each player using only the D-pad or face buttons.
The J-Cart came relatively late in the life cycle of the console. In addition, Codemasters never licensed the technology to other publishers. Thus the number of games released as J-Carts was limited.
The public source identifies “J-Cart” as type of game cartridge for Sega Genesis. This brief keeps that definition visible, then builds a research path around J-Cart, type and game.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Dec 25, 2025. The linked authority identifier is Q1668250. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1994.
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This entry incorporates text from “J-Cart” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.