Sting has released a gameplay video of the fourth episode in their Dept. Heaven series for the Nintendo DS, Knights in the Nightmare. The game calls itself a “Turn-based RTS” which in itself seems contradictory. However, this trailer shows how that kind of mechanic is, indeed, possible.

The player controls the glowing white spirit with the stylus and commands units on the touchscreen. Enemies launch shoot-’em-up style attacks at the spirit, which you must dodge to avoid taking damage. It’s unknown how the non-spirit friendlies factor in in terms of HP, but they’re used to destroy any enemies you fight against.

Strangely enough, the video also showcases an English voice cast. Whether or not the game is originally voiced in English or if it will have two audio tracks has yet to be revealed. Like previous entries from Sting, Knights looks very stylish and promising. If it’s in the same league as Yggdra Union we can expect an excellent and very challenging game when this hits Japanese shelves in July.

Siliconera recently reported that along with the release of the regular package of Knights in the Nightmare there will also be a “Dept. Heaven Episodes Special Pack” which contains both the new episode and the second episode, Yggdra Union, reprinted for the Gameboy Advance. Whether or not the two will have any special feature when they share the DS’s slots is unknown. The D.H.E. Special Pack will run at 8,190¥ while the individual game will cost 6,190¥. As of now Atlus hasn’t announced any plans to bring the game to US shores, though it wouldn’t be surprising to see it come stateside sometime early next year.