The demos of the Mobile VR Jam organized by Oculus and Samsung are available for download on Gear VR for anyone to try them on their device and vote for them.
In total there are more than 300 demos available, so owners of a Gear VR have a lot to choose from, since there are all possible types: shooter, adventure, horror, virtual rides, tower defense, streaming video… the participants have thrown imagination and the jury is going to have a very difficult time choosing a winner. You can access the complete list at this link.
If you don’t have Gear VR, some of the demos have a build to test in DK2, you can find them here.