Glenn's Gases is a Minecraft mod that adds a variety of gases into your Minecraft world. If you think the addition of gases will barely affect your Minecraft experience, you are very wrong... Glenn's Gases is for the survivial players who seek a new way of refreshing the survivial aspects of Minecraft with both new challenges and solutions.
In real life mining, gases can be extremely dangerous. Some gases are very toxic, some are flammable, and some are even explosive. Even coal dust can cause major problems. The worst part is that some of these gases are hard to detect, because they can be colorless and/or odorless. Therefore, miners have to take safety precautions to avoid disasters. You might want to do so too.
Glenn's Gases uses the Gases Framework, an API for adding gases to Minecraft. Gases Framework must be installed for Glenn's Gases to work.
Official home page of Glenn's Gases and the Gases Framework