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This page describes old mod content that was removed or replaced. The information here does not apply to the current version of the mod.
Treasure Bag.gif Expert Mode-Only Content: This section applies only to Expert mode and Expert mode worlds.

"Did you really think it would be that easy?"

Nightmare Mode was the only additional gamemode added by Jetshift Mod, which was an increased difficulty from Expert Mode. It was activated by using Flames of Deities, which was made out of nothing by hand. It could only be activated in an Expert Mode world, as attempting to activate it in a Normal Mode world would have done nothing. It could be toggled freely, but if it was used while a boss is alive, the boss would despawn with no additional penalty.


  • Vanilla enemies and bosses had a 30% life increase, a 60% damage increase and a 70% defense increase.
  • The chances of enemies being Shift'ed was 1-in-45, and the chances of a boss being shifted was 1-in-5.
  • Wall of Flesh's leeches couldn't be hurt.
  • Destroyer's probes couldn't be hurt during the Destroyer battle.
  • Skeletron Prime's vice and laser couldn't be hurt.
  • Golem's fists couldn't be destroyed.
  • Probes were summoned during the Twins fight, and Giant Cursed Skulls were summoned during the Skeletron Prime fight.
Serpent's Greatblade (Jetshift).png Weapons • Serpent's Helmet (Jetshift).png Armor • Heart of Acceptance (Jetshift).png Accessories • Unstable Pickaxe (Jetshift).png Tools • Hell Brick (Jetshift).png Blocks • Astral Destabiliser (Jetshift).png Furniture • Unstable Fragment (Jetshift).png Crafting materials • Legendary Scroll (Jetshift).png Miscellaneous
Cursed Rune (Jetshift).png Mechanics ( Cursed Wall (Jetshift).png Achievements • Shift (buff) (Jetshift).png Buffs )
Quaker (Jetshift).png NPCs ( Wall Clinger (Jetshift).png Enemies • Wordsmith Map Icon (Jetshift).png Town NPCs • Unstable Cosmic Star (Jetshift).png Minibosses • Shadowflight Dagger (Jetshift).png Bosses)
Dark Snow (Jetshift).png Biomes