shooter for a console that introduced staple features for the genre, and The Legend of Zelda: Ocarina of Time, one of the most critically acclaimed games of all time. 2000s The 2000s (decade) showed innovation on both consoles and PCs, and an increasingly competitive market for portable game systems. The impact of wider availability of the Internet led to new gameplay changes, changes in gaming hardware and the introduction of online services for the consoles. The phenomena of user-created video game modifications (commonly referred to as "mods") for games, one trend that began during the Wolfenstein 3D and Doom-era, continued into the start of the 21st century. The most famous example is that of Counter-Strike; released in 1999, it is still one of the most popular online first-person shooters, even though it was created as a mod for Half-Life by two independent programmers. Eventually, game designers realized the potential of mods and custom content in general to enhance the value of their games, and so began to encourage its creation. Some examples of this include Unreal Tournament, which allowed players to import 3dsmax scenes to use as character models, and Maxis' The Sims, for which players could create custom objects. In China, video game consoles were banned in June 2000. This has led to an explosion in the popularity of computer games, especially MMOs. Consoles and the games for them are easily acquired however, as there is a robust grey market importing and distributing them across the country. Another side effect of this law has been increased copyright infringement of video games. The changing home console landscape Sony's dominance of the console market at the start of 2000s caused a major shift in the market. Sega attempted one more foray into console hardware with the Dreamcast in 1998, notably the first console with a built-in Internet connection for online play. However, Sega's reputation had been tarnished from the Saturn, and with Sony having recently announced its upcoming PlayStation 2, Sega left the hardware console market after the Dreamcast, though remained in the arcade game development as well as developing games for consoles. The Dreamcast's library has some groundbreaking games, notably the Shenmue series which are regarded as a major step forward for 3D open-world gameplay and has introduced the quick time event mechanic in its modern form. Sony released the PlayStation 2 (PS2) in 2000, the first console to support