Atlus USA has announced that it is bringing Aquaplus and Sting's Dungeon Travelers 2: The Royal Library & the Monster Seal to PlayStation Vita in North America in Summer 2015. The game will be priced at $39.99 (CA$49.99), and released physically and digitally. NIS America has also revealed that it will be releasing the game in Europe in Fall 2015, also through physical and digital channels.

Dungeon Travelers 2 is set in the kingdom of Romulea, where the nation's monsters have begun an uprising. Players take control of Fried, an adventurer sent to halt the revolt. He travels around the kingdom and meets, rescues, or defeats sixteen girls that can join his party.

The game features first-person turn-based combat against regular monsters and powerful female enemies that must be sealed away to stop the monster uprising. Defeating enemies grants Sealbooks, which can grant bonuses, enchant weapons, or be sold for money. The game also features various sub-events that can occur during dungeons between Fried and the girls in his party. Party members have one of five base classes, and can specialise their class in multiple ways. The game will have Japanese audio with English text and will be PlayStation TV-compatible.

Dungeon Travelers 2 was originally released in Japan for PlayStation Portable in 2013, with the Vita port released the following year. The game is a sequel to To Heart 2: Dungeon Travelers, which in turn is a spin-off to the visual novel To Heart 2. A follow-up titled Dungeon Travelers 2-2 is scheduled to be released in Japan for PlayStation Vita later this year.