2.5d Toolkit -

// Simple Y-axis sorting void Update() spriteRenderer.sortingOrder = (int)(-transform.position.y * 100);

Convert mouse click to 2.5D grid cell:

Or use Unity's (Project Settings → Graphics → Set 2.5D Sorting Axis to (0,1,0) ). 3. Parallax Backgrounds Create a parallax layer controller: 2.5d toolkit

For trees, particles, or UI labels: