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Games that can be played by more than one player, either locally or online.

A turn-based game mechanic is the opposite of a real-time game mechanic. In a Turn-By-Turn mechanic (synonym), each player has to wait for the other to have played, so that they can play, and so on. This way, each player has the time to think about their strategy. TBT games rely less on action than real-time games.

Resources for building and relating to User Interfaces, how the user interacts with your program