Pokémon 2000 Adventure Game (partially found browser-based online game; 2000)
Pokémon 2000 Adventure Game was an online game developed by Cyberworld International Corporation as a tie-in to Pokémon: The Movie 2000. It utilized Cyberworld's proprietary QBORG technology to display 2.5D environments in a specialized browser. According to developer Neil Marshall, the game was only available for four weeks before being pulled due to "a contract dispute". However, at least one file existed as late as 2003, and the front page of the game existed as late as 2009 according to Wayback Machine.
The goal of the game was to travel to three islands, each guarded by one of the three legendary bird Pokémon Moltres, Zapdos, and Articuno. On each island, composed of four levels, the player navigates obstacles via web pages shown on a side panel before reaching a shrine from which the player was to recover a sphere by answering trivia questions.
Warner Bros. has since shuttered the domain the game resided on. Between archives of it and of the older domain www.p2kthemovie.com, all that is left of the game are some HTML and supplementary files, shortcut files used to display said HTML in the browser, and one level. Curiously, Wayback Machine used to have more files for the game, including sprites and five more levels. LMW user DoomTay has a copy of said files. He has contacted Internet Archive about their disappearance from Wayback Machine, and the last response was "I will investigate." on 6/12/2017.
DoomTay has also contacted Marshall about obtaining a more complete copy of the game, but he has replied stating that he did not keep a copy due to the browser "wouldn't run past a specific date (or it was tied to an old version of Internet Explorer and wouldn't work anymore)" In actuality, the browser has been found to work in Windows 10 with little issue, apart from a minor visual glitch rectified by resizing the window). However, the browser does not play well with the missing content. When it comes to missing sprites, if a level is loaded offline, the browser will not load any remaining sprites, whether they will work or not. If the level is loaded from a website, the level will not load at all. In the former case, this can be remedied by placing empty files with the proper filenames in the "objects" folder. The browser can tolerate missing floor or background textures for levels loaded from the local disk, though later versions of the Cyberworld Browser are less forgiving.