A verified Eaglercraft 1.5.2 EPK file is typically . If you see a 2 MB file, it's fake. If you see a 50 MB file, it's been bloated with adware.
Early versions of Eaglercraft (pre-1.8) relied on EPK files because the modern "offline download" feature didn't exist. For 1.5.2 specifically, the EPK contains legacy sound drivers and an older rendering engine that modern browsers handle uniquely. eaglercraft 152 epk files verified
You can send an EPK file to a friend, and they can import it into their own Eaglercraft client to play in your exact world. How to Find Verified EPK Files A verified Eaglercraft 1
EPK files exported from Eaglercraft 1.5.2 are generally not compatible with Eaglercraft 1.8.8 without conversion. eaglercraft 152 epk files verified