Once I've produced something worthy of your time this will be the place to find it.
The Scepter in ZX81 '.P' format:
Time Warden in ZX81 '.P' format: TIMEWARD.P
The Golden Apple in ZX Spectrum '.Z80' format: APPLE.Z80
The Eye of Bain in ZX Spectrum '.Z80' format: BAIN.Z80
To run ZX81 software try XTender by Carlo Delhez.
To run Spectrum software try Spectaculator by Jonathan Needle.