EVE-online isk is the currency used by characters in EVE to purchase goods and services. Isk can be earned, given, or stolen at any time during the game. You can choose a job for your character that will earn them lots of isk. Or you can become a thief and steal for a living. This is why EVE is so popular. The possibilities for characters are seemingly endless. Isk can be used to buy skill kits that will be necessary when learning a new skill. Each kit needs to be completed before your character can ascend to the next skill level. The highest level your character can master is level five. For those who want the most from their careers, and earn isk, opt to complete as many skills as they need to be successful.