These are hobby 'surf' maps created in Hammer Editor for Counter Strike: Source and Counter Strike: 2 that I created before I started to study at Wahington State University Vancouver. Surf is a game mode where the user gains momentum riding on slopes called ramps. The object of the game is to maintain momentum and traverse the obstacle course / level to earn a time without touching the floor. You can re-run a map to beat your own personal best, or challenge other players to a race. This editor is a brush based bsp level editor. Many of the assets were created using brush based bsp and textured with custom textures in Hammer Editor.