Handheld electronic games remained a popular form of portable entertainment throughout the 2000s, offering simple, self-contained gameplay without the need for interchangeable cartridges or discs. While dedicated handheld consoles such as the Game Boy Advance and Nintendo DS dominated the market, standalone electronic games continued to be produced by companies including Radica, Tiger Electronics, Techno Source, Hasbro, and Jakks Pacific, often based on popular films, television series, video games, and licensed characters.