Technically, these carts exploit the limited memory of the console:
Most 200-in-1 carts are for the NES (Nintendo Entertainment System) or Famicom, though variants exist for Sega Genesis, SNES, and Game Boy. 200 in 1 game
Original NES cartridges contained a single game, often with custom chips (mappers) to enhance graphics and sound. A "200 in 1" cart worked by: Technically, these carts exploit the limited memory of
Nintendo fought the 200-in-1 cartridges with religious fervor. The 10NES lockout chip was designed specifically to kill unlicensed software. But pirates were faster. The "CIC clone" was reverse-engineered within years. Most 200-in-1 carts are for the NES (Nintendo
In the US, courts ruled in Atari v. Nintendo that the lockout chip was legal, but that didn't stop the grey market. By the time the legal dust settled, the 200-in-1 game had moved entirely to flea markets, CD stores, and the deep web of 2003 eBay.
Ironically, Nintendo won the legal war but lost the cultural war. Today, the only way to play hundreds of authentic NES games legally is through Nintendo Switch Online (which offers a paltry fraction of the 200-in-1's library) or paid emulation.