Serious Sam has been around for quite some time, but the VR version made this game even more globally recognizable and popular. Created and developed by Croteam, Serious Sam is one of the best VR games I've tried.
I met with Croteam, the developer of Serious Sam, at this year's Reboot InfoGamer in Croatia and first thing I noticed were huge lines of people who wanted to try the game. And why not, Croteam had the most attractive booth at InfoGamer - a huge mixed reality display where you could watch gamers inside virtual reality.
Croteam developed the game for the HTC Vive, which is the headset I used while trying out the game. Once I put the headset on, I was able to choose between three difficulty modes - easy, normal or hard. Since this was my first time playing Serious Sam, I decided for the the easy mode, don't judge.