Game System Status: 

2d20 is a very cinematic action orientated system developed by lead designer Jay Little as part of the Mutant Chronicles 3rd Edition design team. The game is built around a core mechanic of rolling under an Attribute plus Skill total on two twenty sided dice. Multiple successes are possible and can be used to create the cinematic action. 

Several variants have been produced from Mutant Chronicles 3rd Edition dieselpunk post-apocalyse, to Robert E. Howard's Conan sword and sorcery, to Star Trek Adventures space opera and exploration.

There is even a rules light version known as 2d20 Momentum that powers John Carter of Mars for planetary romance adventures. 

List of Game System Variants (Common Names or Titles): 
2d20 Momentum
Star Trek Adventures
Mutant Chronicles 3e
Robert E. Howard's Conan