Cozumel (versión Atari ST con gráficos corregidos), by Aventuras AD. (from caad.es archive, under review)
El Jabato, an illustrated Spanish text adventure by Manuel Gonzalez, Paco Zarco, Juan Antonio Darder and Carlos Marques. PC self-extracting archive; contains two files ready to be loaded with an Atari ST emulator. (An Amiga version of this game is in games/amiga/spanish/jabato.zip, an Amstrad version is in games/amstrad/spanish/jabato.zip, a C64 version is in games/c64/spanish/jabato.zip, a DOS version is in games/pc/spanish/jabato.exe, and a Spectrum version is in games/spectrum/spanish/Jabato.zip, and an MSX version is in games/msx/spanish/Jabato.zip)
Tulum y Coba: Los Templos Sagrados; book two (in two parts) of the trilogy Leyendas de Ci-U-Than, an illustrated Spanish text adventure by Aventuras AD. You are in the peninsula of Yucatan, near Cozumel, and you must cross the Mayan temples of Tulum and Coba. PC self-extracting archive with two files inside, TEMPLOS1.ST and TEMPLOS2.ST, ready to be loaded with an Atari ST emulator. (A DOS version of this game is in games/pc/spanish/templos.exe, and a Spectrum version is in games/spectrum/spanish/Los_Templos_Sagrados.zip)