Seeing "cobble stone" and "childhood", I thought it was about Counter Strike.

Set in a medieval castle, Cobblestone is one of the oldest Counter Strike map, dated back in CS Beta 6.5, and is also one of the most iconic map in Counter Strike, that not only this map spanned across the whole CS competitive scene, but that this map is also designed by David Johnston, who is otherwise more well-known for his work in de_dust2, the most iconic map in CS.