Dungeon Tactics is a skirmish role playing game (SRPG) featuring retro graphics and unique gameplay mechanics. It is free and open source; download it, play it, mod it, share it with your friends!
Here is a look at one of the new features in Dungeon Tactics 1.4 - tileset support allows multiple dynamic map types. The first new map type is the forest, where wide pathways and open meadows place a heavy emphasis on fast ranged mobs.
This is starting to evolve quite nicely.