An obstacle is any game object on the play area that units can collide with while moving.
- Obstacles include:
- Other units, both enemy and allied
- All terrain
- The edges and all area outside of the play area
- Obstacles block line of sight when a unit is performing a {Ranged Attack} action.
- If the unit would overlap no more than a single tray of an allied unit during a move and does not overlap any part of that allied unit at the end of the move, that allied unit is not treated as an obstacle and does not cause a collision.