The organizers say that their approach "requires alternative financial solutions as we are not selling our audience for commercial entities to manipulate with their choices" in explanation for the unusual funding model.
The festival "without advertisements, slogans and plastic" will take place July 7 to July 9, if at least 900 people choose to back it.
Organizers promise a rich mix of live music and electronica along with performative arts and organic food throughout.
Tickets cost €30 until March 31 and will go up after the campaign. Entrance will be free on Sunday.
Here a few photos of the festival's location - the historic Daugavgriva Fortress which guards the mouth of the River Daugava.