Use your imagination.
Amalgamation ideas
Yeah I have trouble stretching it so far that one of the two warring factions would consider it a good idea to perform regular air-raids on their small, artificial habitat.
Don’t let the bounds of reality limit your imagination. No good game has ever come of it!
Regardless, the small isolated urban environment calls for more intimate firerights and heavy artillery has no place in it.
I said like 10 posts back that they would change into bouncing betties if thrown inside…
You throw the grenade, it does a proximity scan, if it is indoors 4 grenades sent via underground tunnels pop through the ground, (in random areas roughly centered around the nade) or a mortar strike comes down.
Yes! You could call it indoor special vampire/mortar bomb and make it shoot sprinkles, as long as it works! Make it function as vampire strikes from etqw.