Ships

There are currently seven playable ships, each of which play in significantly different ways, with the exception of Null and D-13, who share the same behavior. Aside from differences in playstyle, some bosses only appear in runs while playing as certain ships.

Visitors

In Star of Providence, ships are sometimes referred to as "Visitors." Each ship has a number corresponding to the order in which they entered the Facility. For instance, the last Visitors we are aware of are Null and D-13, visitors twelve and thirteen respectively.

The ships themselves were created by the Trader's master (likely Renegade).

Skully is an exception here as, though he is a playable ship, he is not a Visitor and does not belong to their canon.

All Ships

Ship	Visitor #	Unlocked by	Description
Null Twelfth Visitor	12	Unlocked from start.	The default ship.
D-13 Thirteenth Visitor	13	Complete Floor 6 on Normal.	Same as Null, but with Hard difficulty settings. Once difficulty toggle is unlocked, the difference becomes purely cosmetic.
Overlord Sword Mode	10	Complete Floor 6 on Hard then purchase from Kleines for 200,000G.	All weapons (including the default) are Swords.
??? Chaos Mode	11	Complete Floor 6 as Overlord then purchase from Kleines for 200,000G.	Weapons are randomized every room.
Arena Blaster No Bombs, Active Items	1	Complete Floor 7 then purchase from Kleines for 200,000G.	Instead of Bombs, Arena Blaster can hold one Active Item that requires charges by clearing rooms to use.
Skully Modular Weapons	N/A	When a Key is sold in a store, there will be a Skully. Buy the key without leaving and talk to the Skully. Skully can then be purchased from Kleines for 200,000G.	Weapon pickups are replaced with modules that grant weapon and stat bonuses. Modules take up slots on a grid and can be replaced with new ones.
Armsmaster Two Weapon Slots, No Bombs	2	Defeat Armsmaster EX in the Gauntlet then purchase from Kleines for 200,000G.	Cannot gain bombs, but can hold a second weapon and switch between them using the Bomb button.

Star of Providence
Basic Mechanics	Weapons	Keywords	Pickups	Cartridges
Ships	Rooms	Shops	Floors	Hazards
Upgrades	Enemies	Challengers	Minibosses	Bosses
Trials	NPCs	Unlockables	Achievements	Jukebox