Some ideas for other creatures/traps :
- Stinky Wumpus : smells at 3 tiles
- Noisy bats / bottom less precipice : smells at 2 tiles
- Wandering bats/ wumpus : every x turns they move
- Worm : spans more than one node. Moves every two turn. You must shoot its head
- Mole : armless animal, but which changes the connections between the nodes.
And to alter the geometry :
- What is a node could be connected to more (or less) than 3 nodes ?
- One way links