@jacob1 , make a element called MMTL (Moving MeTaL) so it can give people to making moving solids. (from moving sponge)
@Shinseiden , use something like STNE without gravity.
It's only lacking the missions. (I am doing the last adjustments this week.)
Basically you play it by taking stamps of the soldiers and weapons.
Then you click on a mission, deploy weapons, soldiers, issue initial commands on the control panel and unpause - and complete the mission by using only the pause/unpause buttom and the control panel.
The strategy element resides in the unit placement, right timing and use of specific weapons for defeating the enemies without killing or damaging your own squad.