One game, at least 20 years old, for the day. I'll play the game for as long as I enjoy it. The time I spend with a game is in itself a review of how enjoyable I find it.
A gameplay could be a minute (or seconds) for a really lousy game, or hours for a classic, or a good game.
But I promise to never extend a let's-play for more than 24 hrs, because after that, the mighty power of randomness, will pick a new game to play.
At present, Player1Legacy has 108 views spread across 2 videos for Illusion of Gaia, with the game making up 1 hour of published video on his channel. This makes up less than 0.36% of the total overall content for Illusion of Gaia on Player1Legacy's YouTube channel.