A term used to refer to the ease and enjoyability of the game as it increases or decreased difficulty and the amount of fun you have with varying mechanics. Hard to quantify, some games are very fun but have no ramp because there is no change in gameplay over time other than your own skills. However, some people do refer to how a game teaches you, even if runs don’t get easier, as a ramp. An ideal game probably gets both more fun, more complex, more fully understood, and more difficult as you put in more time and challenge yourself. It’s a hard balance!