The Doom model wouldn't work on me anymore, unless the game was spectacular. Once I've played the first x levels, I've usually satisfied my curiosity about the

The Doom model wouldn't work on me anymore, unless the game was spectacular. Once I've played the first x levels, I've usually satisfied my curiosity about the game and, if there is a pay wall, move on. I do appreciate the chance to try before I buy, but maybe because I'm not 'investing' in the game (either by paying money upfront or time investment in a free game), it's easy to move on to one of the hundreds of other good games out here.