PS these are not games but rather VR experiences. They are VR content aggregators. That is they gather VR experiences from other sources and present them as a menu of choices.Within VR, and Jaunt VR would top my list!
I realized I had an unused Google Cardboard just lying about(it was a giveaway at the Legendary Pictures booth at Comic-Con one year) so just downloaded Jaunt. Looking forward to trying it! Any other recommendations?