"Even game" - https://asciinema.org/connect/12a7df96-df79-4874-b179-574ae88a73f6
"Calc game" - https://asciinema.org/a/E0fy0klaiU1uQ36e1TzOocgV8
"GCD game" - https://asciinema.org/a/aizKpODxaEMiNGVeaLdeJh5Ku
"Progression game" - https://asciinema.org/a/bl5snDMJ4ZRAY58ZvftESrN55
"Prime game" - https://asciinema.org/a/IhL7ujkVq4Yc8Gj6giPSZS6FD