Single player, by Gizmo,
requires 
This leans heavily on some elements that generally turn me off—trigger crates with unclear targets, dark lighting, general difficulty discerning where to go next—but by wrapping everything in a haunted house it ends up working really well! It’s haunted like disconcerting haunted, like you never know quite what’s going to happen next. Floors collapse under you, crates fall from above, doors open mysteriously. It’s really good use of atmosphere (in 1999!) and near-flawless use of a fairly complicated tileset. And the moment-to-moment gameplay is good too, with cool uses of gems and enemies that pose a good challenge (even if the darkness helps them a lot). Not the longest level in the world, but one with a lot of craft to it. A disconcerting pleasure to play at 1 AM.
oh, the end of the level seems to be messed up though, there are activate boss events but no boss, weird.
