Acquire's Dungeons & Dam, or "Dandam" for short, is a pretty strange concept. We don't know how some designer got the idea to combine dungeons and rushing water, but it seems like it could work. We first saw this game in Famitsu last week, but this is the first actual information we've been able to figure out about it.
We were just talking about how great it is to have controllable characters in a tower defense game, and it looks like Acquire agrees. Well, this isn't "tower defense" so much as dungeon defense. During the day, you'll recruit adventurers who will mine for materials and build defenses around the city, including dams. At night, creatures will come, but so will flowing water which, depending on how you have directed it with your dams, can help hold back or defeat enemies. At the same time, you'll be traversing the dungeon and fighting. We fully encourage more developers to experiment with defense-type games!