The 120 client aims to bring newer blocks, mob behavior, and updated textures to the browser, offering a more contemporary Minecraft experience than 1.8.8.
EaglerCraft is intentionally minimalist. Players who rely on rich mod ecosystems, complex shaders, or large resource packs will find the experience constrained compared to a fully modded Java client. Security considerations depend on the hosting environment — always trust servers you join. Finally, while EaglerCraft strives for compatibility, slight behavioral differences from vanilla 1.20 may appear in edge-case mechanics.
The jump from 1.8 to 1.20 is massive. You get the updated combat system, the off-hand slot, and all the biomes added in the last several years. How to Access Eaglercraft 1.20