User summary: An isometric 3D action puzzle game by Swedish programmer Bo Jangeborg (he made the Spectrum version, but others made the conversions to Amstrad and Commodore). The player controls the adventurer Isvar, who must escape from the strange and evil-infested castle where he is trapped. The game plays on a flick-screen environment and features for its time a quite remarkable physics engine for the isometric 3D perspective. Objects can be pushed and carried, stacked on each other, each with its own weight and other physical attributes.