This Is the Incredible Game President Underwood Is Obsessed With in House of Cards Season 3

Francis Underwood, Kevin Spacey’s Machiavellian character on the Netflix series House of Cards, has always allowed himself a few good video games. These have tended toward the violent, first-person-shooter variety. But in Season 3, which became available on the streaming service on Friday, a beautiful, somewhat esoteric indie game for mobile devices becomes a minor plot point.

That game is Monument Valley, created by UsTwo. The title—available here for Android and here for iOS— was ranked one of TIME’s 10 best games of 2014. Here’s a description of the game by its designers, part of which Spacey alludes to in the show:

Or as TIME’s reviewer put it: “Monument Valley celebrates non-Euclidean geometry, beautifully bizarre architecture and the art of silent storytelling. Combine royalty with optical trickery, trajectory-fiddling with bonsai pruning, aesthetic contemplation with tactile interaction and you wind up with something like designer ustwo’s delightful, enigmatic puzzler.” Worth checking out, no matter where you are on the road to world domination.