I may only hold this opinion due to the novelty of VR, but I think this is one of the most fun experiences I've had playing video games. Somehow actually having to move a your arms around like you're really fighting adds so much to gameplay that's basically just blocking and attacking over and over again. It never really gets old.

A VR game that reflects the experiences of its time. A simple yet polished wave shooter (With a really good soundtrack might I add)

Fun arcade shooter with enough weapons and equipment diversity to keep things interesting for a long time. I enjoy coming back to this every now and then for some simple shooting fun.

VR wave shooter. One of the first and best, but its a wave shooter. It is only fun for a little bit.