I am kind of addicted to Dog Days, actually. The campaign has surprising replay value. When I beat it, I was expecting to never pick it up again, but a few days later, I was back on a higher difficulty. Also, the game has Arcade Mode (basically, Multiplayer with bots). It's a fun time waster, and something I think every Online game should have.
Last, but not least, Excellent Presentation. This game completely nails the "Homemade COPS VHS" vibe that it's going for. I hope more games adopt it.
With that said, the narrative is short and it ends with a whimper (this is extra noticeable since it starts with a bang). In the end, it's a game worth playing. Spend some time with it when you get the chance.