Hardcore Version
In the Hardcore version of the game, players are prohibited from using the Player Market, except for buying donor coins. Hardcore mode can be disabled in the user settings, but cannot be turned back on once disabled.
Accounts running in hardcore mode get a blue H sigil they can use in chat.
One Life Hardcore (1LHC)
The One Life Hardcore (1LHC) version is an even more challenging mode. In this version, players have all the same restrictions as Hardcore, and must additioanlly avoid dying to any Combat monsters. Quest monsters do not contribute to player deaths in this mode.
Engaging with Raid monsters, whether in Normal or Hard mode, can result in death.
If a player dies in this mode, they are automatically converted to the standard Hardcore mode, and the One Life Hardcore sigil (1LHC sigil) is removed.