Eaglercraft servers (especially those based on the popular or EaglerForge backend) run plugin-based anticheats, just like normal Minecraft servers. A hacked client can send falsified movement packets, but a well-configured anticheat will detect impossible speed values, vertical flight without ground contact, or attack rates beyond human limits.
But using them comes at a cost: the risk of malware, bans, and a damaged community. For those who truly love Eaglercraft as a project, the choice is clear. Play fairly. Build something impressive. Save the hacking for your own single-player test worlds, not for ruining others’ fun.
But where official game communities exist, so do those who want to bend the rules. Enter —modified versions of the game client designed to give players unfair advantages, from flying through walls to seeing through solid ground.