Hell Mining

4 floating islands + a final portal island. Parkour from island 1 to island 2. Island 2 has ore blocks - every ore you mine builds one more block of the parkour bridge to the next island (mine to unlock, then jump it). Repeat island to island. The ores regen. Chat per ore: "+1.4% 1 ore mined" style. Button on the last island -> exit portal.