In this adventure Karl is an author who, it seems, is losing the plot somewhat. The painting in his spare room vanishes and his partner denies any knowledge of it could be put down to a number of things, but Karl starts to doubt his own sanity when visiting the local shopping centre only to find that has vanished too, with nobody else remembering it.
In Nihilum Reverteris is a piece of interactive fiction on the ZX Spectrum from developer Yerzmyey with an intriguing story. If you’re interested, there’s a download at Kikstart.eu/ in-nihilum-spec assuming it hasn’t mysteriously disappeared.
[ZX Spectrum] Considering options when realising the shopping centre has vanished.