The Lazer Tag Santa Monica (LTSM) group is based out of California and usually has games held in the Santa Monica or San Fernando Valley areas. This active group uses Lazer Tag brand gear for their games and post Events through their newly re-opened website. While not an "official" club, they simply promote the game through their events at parks to play together at a local level. Much like the MLTA that I run here in the heartland, new folks are more than welcome to join.
The dates and times for the upcoming games are usually posted about a week or so in advance. LTSM members are very friendly so if you have never played Lazer tag before, they are more than willing to help you out and teach you how to play. So, if you're in the area, be sure to look them up! Their website is in the link below.