IFG is a floorplan generator for role playing games that makes the creation of battle maps very fast and easy. The terrain drawing in IFG is based on the one in Illwinter's game Conquest of Elysium 4, but has since become a bit more advanced. Illwinter's Floorplan Generator has previously been in early access, but it is now completed and the finished version can be bought on steam.
https://store.steampowered.com/app/630900/Illwinters_Floorplan_Generator/