Rune Factory is an immensely fun game and a big time sink. There is several things to do in this game. You can farm, do dungeons, interact with the towns people, do events, and the list goes on and on.
As a dungeon crawler it does a good a job on the combat , you're able to have two abilities with your choice of weapon. Each weapon has a couple of differentiating attacks. The abilities can be found across the world, and there is SEVERAL of them.
The dungeons are fun, but a bit repetitive. Sometimes I will just skip monsters if I'm allowed just because I don't feel like fighting them. (Which isn't a bad thing)
Bosses are a hit and miss, you have some fun boss battles, while others are extremely easy. Overall, I think they did a decent job.
Farming has decent depth on it. You're able to control the growth speed, and other contributing factors to your crop with stuff you can buy from the store or find in the world. Some crops grow better in Spring, some grow better in Winter. It has a lot of different vegetables and flowers to plant, water, and grow.
There is also a lot of role-playing in the game. Talking to the villagers, can be very interesting..Learning their personalities, how they converse between each other, and their back stories.
There is a lot of events that happen during the hours you play this game. From simple fishing and cooking competitions, to seeing whos pet is the strongest in a battle.
Overall, it's pretty addicting, and a worthwhile game. They blended dungeon crawling with farming very well to create a fantastic role-playing experience. There is just too many things to do in the game.
(I didn't even list everything, theres cooking, blacksmithing, crafting, and just more and more)