About laser tag, or lasergame (that's what it is called in Sweden), there is a lasergame place I have been to earlier, close to the Fyrishov sports center, called Latitude-59:
Contact: [masked], or tel:[masked]
Price: minimum 780 kr for twelve people or less (so 65 kr per player), and another 65 kr for every additional participant after the first twelve.
Activity: The game goes on for twenty minutes, which feel extremely long when you are in there. You carry a vest that beeps when it is hit by someone else's laser. The lasers are weak and don't hurt your eyes. Two teams compete, on two floors with dark walls and hiding places and neon lights (as seen in the pictures on the website). When you are hit you can't shoot or be shot for a few seconds, giving you time to retreat to a safer position. You have a limited number of shots, and when you have used them all you need to reload by holding up your gun in front of your team's "base", which is a screen in the wall. The other team will try to capture your "base" by shooting at it at close range for thirty seconds, but that actually never happens since you will never be able to stand there for half a minute without being hit by someone.
Afterward you get a score sheet showing how many times you hit the other team and how many times you were hit. The statistics are pretty thorough, showing that Player 4 hit Player 7 12 times, etc. (Embarrassing if you have hit a lot of people on your own team!)
Lots of fun in the longest twenty minutes of your life!