At the end, Google asks if you'd like to purchase the game while saving your current progress, according to 9to5Google. Once launched, it starts a countdown timer from when you start the trial, rather than active playtime. Below buy/claim with Pro options, however, is a a new 'Free trial' button that allows for 30 minutes of free play. Hello Engineer is a new free game for Pro tier subscribers, but it costs $20 if you're on the free tier. Spotted by YouTuber Gem, the feature allows users on the free tier to get access to a 30-minute trial for Hello Engineer, before deciding whether to spend $20 buying it. On top of announcing a Dragon Ball Z: Kakarot and a Doom Eternal update yesterday, Stadia appears to have added support for free game trials starting with its own exclusive title, 9to5Google has reported.