A 1990 NES puzzle game developed and published by HAL Laboratory, part of the wider Eggerland line that had been running in Japan since the mid-eighties and reached Western players under the Lolo name.

The structure is simple and uncompromising. Each room is a self-contained puzzle on a single screen. Collect every heart to open the chest holding the key, then reach the exit. The complication comes from enemies with strictly defined behaviour: some sit still and fire the moment you enter their line, some charge, others stay dormant until a specific item is picked up. Against them you have pushable blocks and the ability to turn a creature temporarily into an egg, which can then be shoved around and used as a bridge or a shield.

The series' strength is the purity of its design. There is no randomness and no reflex test. Every room has a solution that can be worked out in advance, and failing to find it is entirely the player's problem. Equally, mistakes are frequently irreversible, because a block pushed into a corner cannot be retrieved and the room has to be restarted from scratch.

This second instalment is noticeably harder than its predecessor, with rooms that demand an exact sequence of moves rather than a general approach. That difficulty is why the series is still recommended among puzzle players looking for something genuinely demanding that does not pad itself out with busywork.

The record lists the year, the developer, the Eggerland series, a top-down viewpoint and single-player only. No browser-playable version is attached to this entry.