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Downfall Expansion Mod - 5.2

Downfall is a full-featured Expansion for Slay the Spire, including a new campaign, SEVEN new heroes to play, new relics, new cards, new potions, and more.

The Heart demands that this endless cycle of slaughter be finished. Answer the call as a Villain, and see to the defense of the Spire.

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Instead of engaging in a Normal Run, you may now play in the brand new Downfall Mode, as one of four new Villain characters, and protect the spire from those who would harm it. This is a separate game mode from the Standard run.


Command a squadron of slime minions to do your bidding as the dapper Slime Boss! Bash enemies head-first with powerful Tackle cards, which damage yourself as well as your foe. Coat your enemies in horrendous Goop and consume it for bonus damage and healing, quickly restoring any Tackle damage that went unblocked.

The Slime Boss is an updated version of the character formerly found in the Slimebound Mod.


As the Guardian, waylay your enemies with powerful multi-hit attacks as you build up your Strength. Brace yourself, and shrug off the blows to enter Defensive Mode, easily deflecting damage and protecting your health while biting back. Collect Gem cards and socket them into other cards, effectively customizing your cards with bonus effects.

The Guardian is an updated version of the character formerly found in the Guardian Mod.


Incinerate your enemies with Soulburn, ignite the six ghostflames that surround your character for extra effects, and utilize Ethereal cards like never before.

This is a brand new character exclusive to Downfall, never before seen in a released mod.


Armed with sword, shield, and insulting wits, use his many fighting stances and techniques to your advantage, including Combos and devastating Finishers.


The Automaton brings an entirely new mechanic to Downfall. As the Automaton, program Functions - custom-made cards you craft each battle. But, beware of adding too many bugs to your program!


Hoard energy, hoard cards, collect the souls of enemies and take their skills as cards! Utilize powerful Pyre cards, which require exhausting another card to play them, and pepper your foes in endless debuffs (including the new Doom debuff!)


Not one, but FIVE characters in one! Play the entire Gremlin Gang, who each have their own themes and mechanics to build around.

Formerly HypoSoc's Gremlins Mod, this has been updated and modernized and integrated as a new Downfall villain.


The final character of the Downfall villains package. Utilize Unknown cards, which will randomly be rerolled as new cards of other characters. Synergize with these off-class cards, manipulate their costs, and gain control over RNG itself.


Like all characters, the Villains each add a few new Relics to the base game pool. If desired, these can be disabled for Standard Mode via the Config menu.

New potions, each themed around one of the Villains, is added to the potion pool. If desired, these can be disabled for Standard Mode via the Config menu.

A new suite of 'Boss' type cards have been added, themed around the Bosses of the Spire. These are generally high-cost, potent cards, and can be purchased at the Merchant, sometimes replacing Colorless cards. If desired, these can be disabled for Standard Mode via the Config menu.

New global Events available to all characters have been added. If desired, these can be disabled for Standard Mode via the Config menu.

New global Curses have been added to the pool. If desired, these can be disabled for Standard Mode via the Config menu.

New Daily Modifiers have been added.

All Villain characters can be enabled via the Config Menu to be playable in Standard Mode. You will still fight their normal counterparts as bosses.


Downfall adds a new reward after the first time you win a run with a given character: an alternate skin!

Alternate skins come with animated character selection screens, and can be chosen for all future runs. Skin change only affects the appearance of the character - no gameplay alterations occur when changing skins.

This includes the Guardian costume from the mod formerly known as “Guardian-chan”, and all skins are provided by the same artist - Rita-B.

Automaton does not have alternate skins at this time, but will be added later.