The aim of this study is to determine if participants randomized to our mHealth MapTrek game increases daily physical activity (average steps/day, active minutes/day) compared to a control group among sedentary office workers over 10 weeks. The investigators hypothesize the MapTrek intervention group will significantly increase their daily steps and active minutes compared to the control group over 10 weeks.

Inclusion Criteria:

• Eligible participants were 21 to 65 year of age, working full-time (at least 35 hours/week) in a desk-dependent job (self-report sitting >75% of work day), who owned a smart phone.

Exclusion Criteria:

• Exclusion criteria included ages <18 years or >65 years, pregnancy or planned pregnancy, prisoner status, and any contraindications to engaging in regular physical activity as identified by the Physical Activity Readiness Questionnaire (PAR-Q), not owning a smart phone, (Cardinal, Esters, & Cardinal, 1996).