SappyInsane

The mod adds cus­tomiz­able planes and heli­copters with an upgrade sys­tem and var­i­ous engine types.

Adds gey­sers to the game that gen­er­ate in moun­tains and the Nether, can be mined with Silk Touch, and con­vert­ed into red­stone-acti­vat­ed variants.

Adds sub­marines for explor­ing marine depths and study­ing the under­wa­ter environment.