Signs forbidden the use of games like Pokemon Go are quite common across Japans. You find them at many Temples etc. Many cafes/bars/eateries have signs out the front with drawings of the Pokemon you'd find nearby with Pokemon Go.
Source. Went through Japan playing Pokemon Go.. saw many many Japanese people playing Pokemon Go. And signs.. signs with Pokemon everywhere.
A number of Russian middle class volunteers who fought in Donbass war treated it as kind of similar experience - an adventurous game/vacation, a "noble quest to defend 'Russian world' from dark forces of fascism and imperialism".
Source. Went through Japan playing Pokemon Go.. saw many many Japanese people playing Pokemon Go. And signs.. signs with Pokemon everywhere.