Limited Time Travel is a new experience! During these expeditions, Agents can collect EXP (Event XP), which is specific to the current Event only.
 
You will earn EXP through opening Event capsules and reaching milestones with your relics (generators).
 

DOES XP FROM MY MAIN GAME WORK IN EVENTS?

Nope: only EXP can be used in Events.
 

CAN I BRING EXP BACK TO MY MAIN GAME?

EXP cannot be brought back to the main game, so be sure to use it all while you can!
 

CAN I USE LEFT OVER EXP IN THE NEXT EVENT?

No. Use up all EXP before the event ends, Agent!
 

HOW DO I UPGRADE MY HEROES?

You guessed it, EXP!