Operation Abyss is a first person RPG dungeon crawler with turn-based battles using a customized team of 6 characters from a total of 10 classes.

Operation Abyss: New Tokyo Legacy is a combined remake of the first two games in the Generation Xth trilogy, Code Hazard and Code Breaker, by Experience Inc. based on the Wizardry series. They were only released in Japan.

The sequel "Operation Babel: New Tokyo Legacy" is the remake of the third Generation Xth game, Code Realize.

"Two girls are key players in the incident...What do they know!?

Multiple reports of kidnapping have shaken Tokyo to its core. Regrettably, these reports are not baseless rumors...

The victims are mainly young people and their numbers have been steadily rising. Variants and members of a mysterious group have been sighted at the scene of the kidnappings. Students from Hinowa Academy—the very school attended by members of the Xth Squad—are in danger.

In pursuit of the truth, closely held secrets will be exposed...

But this is far from the only incident plaguing the city.

There are reports of strange incidents known as Sprawl Terrors, in which buildings and people suddenly vanish into thin air. A powerful enemy with mysterious origins opposes your efforts to investigate this phenomena. Furthermore, there appear to be some familiar faces among your enemies.

As the situation grows more desperate, loyalties will be questioned!"