This is important. Eaglercraft is not an official Mojang or Microsoft product. It is a clone. Mojang’s EULA (End User License Agreement) generally prohibits distributing clones of Minecraft.
The phrase typically refers to a curated list (the "top" or most popular) of unblocked instances of Eaglercraft. These are websites that: eaglercraft 15 2 unblocked top
Dedicated "Unblocked Games 66" or "76" sites frequently host Eaglercraft 1.5.2 as one of their premier titles. Top Eaglercraft 1.5.2 Servers This is important