Unity is a cross-platform game engine developed by Unity Technologies, first announced and released in June 2005 at Apple Inc.'s Worldwide Developers Conference as a Mac OS X-exclusive game engine. The engine has since been gradually extended to support a variety of desktop, mobile, console and virtual reality platforms. It is particularly popular for iOS and Android mobile game development and us ed for games such as Pokémon Go, Mo nument Valley, Call of Duty: Mobile, Beat Saber and Cuphead. It is considered easy to use for b eginner developers and is popular for indie gam e development.

HTML5 is a markup language used for structuring and presenting content on the World Wide Web. It is the fifth and final major HTML version that is a World Wide Web Consortium (W3C) recommendation.
Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language such as HTML.

JavaScript often abbreviated JS, is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. All major web browsers have a dedicated JavaScript engine to execute the code on users' devices.

Online games have seen a huge growth over the last few years, with more and more people usi ng online games to enhance a player’s skills of observation, intuitive abilities and sharpen their alertness and concentration. Therefore, we choose Online chess game development as our project topic. Chess is a game that has been developed to play offline i.e., it can be played against a computer or a human present at the same physical location. However, when the game is played online the opponent can be at any geographical location and may be totally unknown to the player. For the online game, the player has to register himself and a unique identification number will provided on the successful registration along with a password for further usages. The administrator handles the registration procedures and also checks on the duplicity of the users. The main portal comprises a normal lookalike chessboard providing two sided panel. The game can be played and is saved upon completion for future references. The players has to wait till the completion of the move of the opponent. The player can also redo a move with permission of the opponent and also forfeit a game after or before the commencement of the match. There is also a facility of communication between the players with the help of text, so that it can benefit both the players. After completion or stoppage of each game a log is saved about the game, so that for each game can be resumed after a certain interval of time. There is also provision about learning about the game of chess through various tutorials. The registered users can also play with the computer to improve their skills as well as learn new tricks. The users can also visit the history page for referring different games that has been played earlier to detect their mistakes in certain tournaments.