The match exploded in the final minutes of regular time.
When Växjö was on for a winning goal, they offered Färjestad a free position after sloppy play in their own zone.
Gustav Rydahl got a measure long and well and put 3-2 up in the right cross.
Then only 3.02 remained.
The few FBK fans cheered on what seemed to be the winning goal.
But with 1.39 left, Växjö equalized to 3-3.
Hugo Gustafsson stayed ahead and pushed a return in his SHL debut.
With the dot minute left, Växjö came in a flying change and Ludvig Nilsson had the puck in the post behind Henrik Haukeland, something Växjö's retired gold goalkeeper from this spring, Viktor Fasth, noted from the stands.
The whole thing had to be decided on penalties after the extra time in three against three became goalless.
FBK had a two-on-one position and were almost in a hurry.
- It was very nice, we were under pressure the last five minutes, says FBK's goalkeeper Haukeland to C More.
In the penalty shootout, FBK's Victor Ejdsell was the only one of six penalty shooters who set his penalty.
Färjestad turned a 0-2 defeat in this nice start to the season.