Friends: Louise Leclerc, Tuomas Sahlsten, Frederic Naud, Nguyen Viet Dang.

A link to an article about the Hofstadter's butterfly in Quanta Magazine (related to my last paper on the Fibonacci Hamiltonian).

A link to the game Hyperbolica, in which you can explore the hyperbolic space with first-person perspective.

A game about Dehn twists.