Many files labeled as "Eaglercraft 1.11.2" are community-made clients that:
Large, rare structures found in Dark Forest biomes. Use a Cartographer villager to get a Woodland Explorer Map to find them.
Disclaimer: This article is for educational purposes. The author does not condone piracy. Eaglercraft is intended for users who own a legitimate copy of Minecraft Java Edition as a backup portable client.
This is the easiest way to test the game.