Sounds like Disgaea's Geo Panel.
In Disgaea's case, there are Geo Panel with different colors and effects, example :
If there are a blue panel that increase DEF +15%, it will increase the DEF of those that are currently standing on a blue tile. Of course, the tiles also have different colors, and that means other Geo Panel also gives different effect to the respective colors. One map could have one or more Geo Panel.
We can destroy those panels to explode the tiles with the same color, dealing damage to those that are currently on the tile.
If some similar system can be implemented into VF, then it might be interesting