Eaglercraft 1.20.1 is not an official "full port" of Minecraft Java Edition; instead, it typically refers to custom community projects like Eaglercraft 1.20
Most "Eaglercraft 1.20.1 Exclusive" servers are actually . You connect your browser client to a remote server running a real Minecraft 1.20.1 Java server, and the client translates the packets. This means: eaglercraft 120 1 exclusive
Once on the site, look for a selection of servers or a specific button/link that leads to the "1.20.1 Exclusive" server. There might be a list of available servers; choose the one labeled "1.20.1 Exclusive." Eaglercraft 1
Another key trade-off is persistence and storage. Browser storage APIs are sandboxed and quota-limited; an Exclusive build might offer lightweight world persistence, cloud-synced saves via optional authenticated services, or ephemeral sessions that reset on reload. Asset hosting and content delivery decisions—embedding textures inside the client versus streaming from CDNs—affect initial load times and offline capability. There might be a list of available servers;