Loot Tokens

As you kill enemies, you will have the chance for them to drop loot tokens. Those tokens are an indication to the chronology of the game, and marked by the Boss you killed last.

The tokens available are: (arranged in sequence)

Pre-Boss Loot Token - Drops before the Dryad arrives and also before killing any Boss.

Post-Goblins Loot Token - Drops after The Goblin Army is defeated.

Post-skeletron Loot Token - Drops after Skeletron is defeated.

Hardmode Loot Token - Drops after Wall of Flesh is defeated.

Post-Pirate Loot Token - Drops after The Pirate Invasion is defeated.

Post-Mech Loot Token - Drops after defeating any of the Mechanical Bosses.

Post-Plantera Loot Token - Drops after Plantera is defeated.

Jungle Temple Loot Token - Drops after Plantera has been defeated while you are in the Lihzhard Temple.

Post-Martian Loot Token - Drops after The Martian Madness is defeated.

There is one more loot token that is not dependent on chronology:
Swap Token - Can be bought from the Goblin Tinkerer and used at the Tinkerer's Workshop -  Is used for swapping a enemy's loot for something else it drops. For Example when you defeat King Slime you can swap Solidifier for a Slimy Saddle. There are some some restrictions though; The ninja gear (which is also dropped by King Slime) can be swapped for a different ninja item but not for the Solidifier or the Slimy Saddle.

Tips:
If two or more of the requirements above are met, the tokens are dropped randomly. For Example: Post-skeletron Loot Token and Hardmode Loot Token.