Modern ZX-Retro Gaming | ZX Spectrum 48K: "RTZX" (2024) 1K ...very fast... Procedural Graphics @MZX-RG | Uploaded August 2024 | Updated October 2024, 2 hours ago.
Huge playlist archive with high quality demos: youtube.com/playlist?list=PLxOanVBhqd3uvbm6zFvcoyecpU-6qzb1v
A 1K program with very fast rendering made by Rcl / Virtual Vision Group in 2024. You can download it here: events.retroscene.org/files/cc2024/1kbProceduralGraphics/rtzx.zip