Searches for Alex Caves mod Minecraft PE or Alex’s Caves mod Download Bedrock are common, but the original project is a Minecraft: Java Edition mod. That technical difference matters because Java mods and Bedrock add-ons are not interchangeable file formats.
The original project targets Java Edition
The original Alex’s Caves listings identify Minecraft: Java Edition 1.20.1 with Forge and NeoForge support. A Java mod normally loads through a Java mod loader and uses compiled JAR files.
Bedrock and PE use another ecosystem
Minecraft Bedrock Edition, including mobile editions commonly called Minecraft PE, uses a different add-on and scripting ecosystem. A Java JAR cannot be copied into a Bedrock folder and expected to work.
What a “Bedrock download” might mean
A result using the Alex’s Caves name for Bedrock could be a fan-made recreation, inspired add-on, map, resource pack or an unrelated file. It should not be assumed to be the original Java mod. Check the creator, platform, file type and description carefully.
Minecraft Bedrock 1.21 searches
A phrase such as Alex Caves mod Minecraft Bedrock 1.21 download does not change the underlying edition difference. Version numbers can look similar across editions while the modding formats remain incompatible.
Safe expectation for mobile players
If you play only Bedrock or mobile Minecraft, look for clearly identified Bedrock add-ons from reputable creators and do not install Java JARs or PC executables claiming to convert the original mod automatically.
Next step
Return to the main compatibility section before downloading so you can compare edition, Minecraft version, loader and file type in one place.