https://nichebarrier.com/higher-lower
There are three difficulty levels: Easy only pulls from games released in the last ~10 years, Normal considers the last ~20 years and Expert has everything. Lower selling games are also excluded from lower difficulties.
The game can be considered beaten if you get 20 questions right in a row. The bar at the bottom shows your progress towards that goal. Currently there's no reward for getting that many right (or even more), but I was thinking about adding a leaderboard in the future.