*[https://playonretro.itch.io/ Play on retro] Homebrew retro games editor
*[http://www.mojontwins.com TheMojonTwins (ES)] Homebrew developer group that focuses on creating games for retro systems, among which is the CPC.
*[https://www.4mhz.es /en/ 4MHz (ES)] Homebrew developer group that focuses on creating games for retro systems that use the Z80 CPU.
*[http://www.retroworks.es/index_en.php RetroWorks] Z80 homebrew games developer
*[https://altanerus-dog.itch.io/ Altanerus Dog (ES)] CPC and PC homebrew games developer