Tremors was released on 01/19/1990.
Star Wars Tremors of the Force - 2014 was released on: USA: 2014
Having initially being reported as cancelled in 2010 & with no information released since then, surprise surprise, Tremors 5: Bloodlines released direct-to-DVD & Netflix streaming on October 6th 2015.
Obscurus Lupa Presents - 2010 Tremors - 3.14 was released on: USA: 15 June 2012
Welshy Reviews - 2011 Tremors 1-13 was released on: USA: 3 September 2011
Tremors - 2003 Night of the Shriekers 1-3 was released on: USA: 4 April 2003
Tremors of Terror from Space - 2007 was released on: USA: 1 June 2007 (Delta Moon Student Film Festival)
Obscurus Lupa Presents - 2010 Tremors 3-14 was released on: USA: 15 June 2012
Arrow - 2012 Tremors 2-12 was released on: USA: 29 January 2014 UK: 5 March 2014
"Tremors" (1990) "Tremors II: Aftershocks" (1996) "Tremors 3: Back to Perfection" (2001) "Tremors 4: The Legend Begins" (2004) There was also a 2003 television series.
Tremors - 2003 Water Hazard 1-12 was released on: USA: 1 August 2003 Finland: 19 April 2006
Tremors - 2003 Flora or Fauna 1-5 was released on: USA: 18 April 2003 Finland: 1 March 2006
Tremors - 2003 Shriek and Destroy 1-13 was released on: USA: 8 August 2003 Finland: 22 February 2006