The genre of the game, Sora no Otoshimono: Doki Doki Summer Vacation, is “adventure.” In other words it’s a visual novel. Other than discussing the 9,975 yen ($110) deluxe pack, few details about the title have been revealed.
Items in the DX Pack include glow in the dark stickers, a card case, and an 1800×1600 mm shower curtain with three of the girls. A standalone copy of Sora no Otoshimono: Doki Doki Summer Vacation goes for 6,090 yen ($68). Pre-order it before March 25 and you get a poster as a bonus.