Extra Hard Mode changes the game rules to create NEW, INTERESTING CHALLENGES for players who have mastered the core game. Unlike Mojang's "hard" mode or other plugins' "hardcore" modes which just punish you more for making mistakes without actually changing game mechanics, Extra Hard Mode delivers interesting new challenges for advanced players.
Avoid plugins which allow players to teleport themselves out of danger when they're in combat or lost. Especially avoid plugins which add commands like /home, /back, and /tpa, since they will undermine the difficulty VERY much. Consider instead a teleportation plugin like Population Density, which allows players to teleport only between teleportation posts it places on the surface every 400 blocks.
You might want to look into balancing villagers. Having diamond gear tradable for very easily farmable materials will undermine the difficulty. I use Rebalance Villagers to make the trades harder.
Metrics
This plugin utilizes Hidendra's plugin metrics system, which means that the following information is collected and sent to mcstats.org:
A unique identifier
The server's version of Java
Whether the server is in offline or online mode
The plugin's version
The server's version
The OS version/name and architecture
The core count for the CPU
The number of players online
The Metrics version
Config options that are activated, allowing me to see what people use (or don't)
You can disable the stat collection via /plugins/PluginMetrics/config.yml if you wish. If you want to see the stats, you can go here
Source
Source can be found on github here. Contributions, pull requests and feedback are appreciated :).
Credits and Thanks
Coding
BigScary for creating this project
Mitsugaru for implementing awesome utility classes
