Effects of Exergaming to Reduce Sedentary Time in Inactive Patients With Heart Failure

This study is testing whether an exergame — a video game that requires physical movement — can help heart failure patients sit less and move more during their daily lives, potentially improving their heart health and quality of life. **You may be eligible if...** - You have been diagnosed with symptomatic heart failure by a cardiologist (any type — preserved, mid-range, or reduced ejection fraction) - You are currently physically inactive - You are 18 years or older - You are clinically stable - You are able to speak and understand the language used in the study - You are willing to use a smartphone for the study (one can be borrowed if needed) **You may NOT be eligible if...** - Visual, hearing, or cognitive problems would prevent you from using an exergame - You are unable to perform a 6-minute walking test - You have other conditions that make physical activity unsafe Talk to your doctor to see if this trial is right for you.