Half-Life 2: Ballmen Mod

Ballmen is a mod focused on fast action and great freedom of movement and wallwalking.

Features:-

• Blisteringly Fast Individual and Team Combat
• A Unique Scavanger Hunt Type Gamemode
• Wallwalking: The Ability to Walk on any Wall
• Eight Unique Attacks That can Independently be Assigned to Primary and Secondary Fire
• Special Abilities That Offer Enhanced Freedom of Movement
• Energy System That Replaces the Traditional Ammunition and Stamina
• Many Powerups, Ranging from Health Regen to Improved Air Control
• Regenerative Health and Energy
• Maps That Offer Three Dimensions of Movement Freedom

Check out the video below for visual example of the mod's gameplay.