Its fun just watching warriors walk around your hometown with dwarves that just pop out of no where and start mining and collecting treasure and minerals earning you cash. What isn't fun is having to stop lava and water from getting through to your hometown and killing everything in its path, its sad having to risk a life of a little dwarfy just to seal the cave up.
It gets harder throughout when the dwarves start digging deeper in, you have to be more cautious of lava, water, boss fights etc. That is why we have a tower! A tower that can send your dwarves flying over into the cave where the boss is just to beat the heck outta those ugly ♥♥♥♥♥♥♥s. Man I love doing that!
This game is pretty addictive, it does have good graphics, you don't have to really do much besides watching out for threats nothing more than drinking a cup of coffee and reading a book until a threat shows up on your screen.