Electromyography (EMG)–based brain-computer interface (BCI) systems primarily rely on electrical signals generated by muscle activity instead of the typically used brain activity measured via electroencephalography (EEG). Such EMG-BCIs are promising systems that enhance communication and control. This study introduces a simple EMG-BCI communication system developed as a football game for a communication-impaired participant. The football in the game can be moved to a left-side or a right-side goal, representing answers to two-state queries, i.e., yes-or-no-questions. By using restricted game controls, correctly following verbal instructions, and showing movement-related brain activity preceding muscle contractions, our participant can deliberately control the directions of the ball movements and, thus, successfully use our game for communication.

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