Remember demos? We host a bunch of classic ones here at GameFront, but the trend is being revived by GOG as part of their Summer Sale, with both System Shock's remake and Desperados III getting demo versions you can download for free, right now.
There are a few other demos available too, including Carrion, Cris Tales, Spiritfarer, and, notably, the Destroy All Humans! remake, all of which I'll be checking out very shortly.
Of course, there are actual games to buy for cheap, too, including the recent reboot of Prey, which is just $9, and Metro Exodus. There are a few bundles too from EA, Activision, Paradox, and Devolver Digital.