I've changed the prices on both of my VR games. You can now download them for free or Pay What You Want. If you do decide to pay you get a free Steam key.
These games have both kind of disappeared into the crowd of bigger, more mainstream games that have been released over the last year. I want to try this Pay What You Want as a way to let more people play 'em - and maybe generate a little income. I can't really make any less money than I'm making with them now so it should be a win-win. -)
Crashed Lander is my oldest game - released in the Rift DK1 days. Space Taxi style, physics-based gameplay. It's been updated a gaziliion times and still works well with current hardware. Somewhat intense in VR since the camera is constantly turning and rotating, but it can be a lot of fun if you are not sensitive to such things. Works on monitor, too.
Chunky Orbits is not really a game, more of a toy. It's a realistic physics sim that lets you get up close and personal with gravity. Create small 'solar systems', watch orbiting chunks coalesce into larger bodies, fling comets into the sun - all in a small, personal space that gives you a good feel for how gravity works.