June 23, 2011
The game features some references to the Mario series:
In the plumber commercial floor, there's a pipe looking like a Warp Pipe with insite what may be a wilted Piranha Plant. There also are a cap and overall looking like Mario's hung on a coat hanger stand.
There are Plumber A and Plumber B costumes, which are based on Mario and Luigi, respectively.
On Bitbook, a spoof of Facebook, one of the many Bitizens' posts is:
NimbleBit, that created Tiny Tower had no right over Nintendo's Mario, but they only included minor references to the series.