Gower, 34, joined the Broncos for the 2012 season on a two year deal and made 28 appearances for the club in 2012 comprising of 26 Super League games and two Challenge Cup games. He scored four tries and 27 goals in his first season.
Gower previously played Rugby League with Penrith Panthers in the NRL and also represented New South Wales and Australia. In 2008 he switched codes to play for French Rugby Union club Bayonne where he remained until the end of 2011, he represented Italy Rugby Union on 13 occasions, for which he is eligible due to his Italian Grandfather.
"We're settled here, I spoke to the club and they were willing to give me another year which was great," said Gower.
"Obviously last season was a tough season but we love being here and we've enjoyed it, even though it was a tough grind it's just part of footy. I'm just looking forward to this year.
"That's the benefit of having a group that's a year older and hopefully we can respond to that and play a lot more consistent football over the entire year.
"It's fine, pre-season is pre-season, you are here to work and get yourself prepared for the new season, it's always tough, you just have to put the effort in and you'll see the rewards later on.
"For me it's winning games, if we can win games it just makes life easier and more enjoyable.
London Broncos head coach Tony Rea believes signing Gower is a great sign for the club.
"Craig displays terrific appetite for the game and towards training and preparation," said Rea.
"Some people might query signing a player of his age but the fact he played every game apart from one last year is better evidence than his birth certificate. It's not a risk, it's calculated. The evidence is he is playing."
London Broncos season tickets are now available for the 2013 season. Ticket prices have been revised to offer supporters Adult Broncos season tickets at £175 with Junior Broncos (Under 19 years old on 1st January 2013) season tickets at £30. Concessionary priced tickets of £105 are offered to students and supporters aged 60 or over.
For season ticket purchases visit www.londonbroncosrl.com or call the ticket hotline on 020 8410 6000.