Survivality

Survivality adds new features and mechanics to make the game's progression slower:

No more punching trees

Now wood will be x2 harder to mine with bare hands and won't drop anything, instead you should go out look for some sticks, strings and flint because then you can craft a Flint Hatchet, an items that lets you break wood, but be careful since it's even worse than gold tools.

Thirst and water

Stop thinking only about eating, you can also get thirsty while exploring. You can't just find the closest water source and start drinking because then you'll end up with nausea and poison, you must get a glass bottle, fill it with water and then heat it up on a campfire to kill all the germs, NOW you can finally drink.

Food rots

No more chests filled with food, because it will rot after 3 days so what you can do is either go to a cold biome and it will last a tiny little bit longer (30 seconds extra) OR which is highly recomended, building a Thermal Chest using 4 iron blocks and a ice block in the middle, where if you put either snowballs, snow, powdered snow, ice, packed ice or blue ice as a coolant and then insert food in the slots it will stop the process based on which source you use UNTIL it melts.

Insomnia weakness

Not sleeping will not only bring phantoms anymore but also weaken you by making you slower and have less strength, the more you don't sleep the worse it gets and the maximum you can get will basically give you Slowness, Weakness AND Mining fatigue II.

Normal Torches turn off

Don't leave torches around your house forever or under the rain, because after 2 days they will unlit and only with a flint and steel you can turn them on again.