- Build on ground, stationary
- Load one shot/volley at a time
- Aim by rotation, tiles forward, tiles left/right
- Fire manually (New UI elements would be needed for aiming and firing; something on the right click menu?)
- Fires over enemies/terrain
- Player would have to go do recon to check aim, placing themselves at risk.
- High priority target for creepers; would require turrets and the player to keep safe the closer you get to enemy base.
- A maximum firing range so forward positions would need to be built.
- Mortar -> Shell Artillery -> Rocket Artillery -> Guided Missile
- Firing circuit for firing volleys of artillery at once
- Placeable beacon, ignored by creepers? Some kind of range finder to require less running back and forth to check?
In competitive multiplayer the time needed to build and range in your fire could act as a balance.



 ,but I believe there might be a better way to kill a lot of bugs-aliens-things.
 ,but I believe there might be a better way to kill a lot of bugs-aliens-things.      .  A missile artillery seems simpler then a regular to implement since it could copy most of the mechanics of the rocket launcher for it's attack and it fits in a high tech world like Factorio.  Although adding anything isn't just copy and paste, but some form of artillery would be needed in multiplayer so that people can actually break an other person's Laser Wall of Doom.
 .  A missile artillery seems simpler then a regular to implement since it could copy most of the mechanics of the rocket launcher for it's attack and it fits in a high tech world like Factorio.  Although adding anything isn't just copy and paste, but some form of artillery would be needed in multiplayer so that people can actually break an other person's Laser Wall of Doom.



 
 