The following sports will be played at the ONCS 2023: 

• Basketball (Indoor)
• Petanque (Outdoor)
• Board games (Indoor) 
• Darts (Indoor)
• Bounceball (Knotsball, outdoor) 
• Dodgeball (Indoor) 
• Ultimate Frisbee (Outdoor) 
• KUBB (Outdoor)
• Beach Volleyball (Outdoor) 
• Football (Outdoor)
• Handball (Indoor)