Migrants gather before trying to cross the Bosnia-Croatia border in what they call "the game," in the woods near Velika Kladusa, Bosnia-Herzegovina, Sept. 29, 2020.

A migrant from Bangladesh walks through the woods near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

Migrants from Bangladesh stand inside an abandoned factory near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

Migrants from Bangladesh stand inside an abandoned factory near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

Migrants from Bangladesh stand inside an old abandoned factory near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

A migrant from Bangladesh stands inside an abandoned factory near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

Migrants from Bangladesh stand inside an abandoned factory near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

A migrant from Bangladesh calls to prayer in the woods near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

Migrants walk toward Croatia in an attempt to cross the Bosnia-Croatia border in what they call "the game," near Velika Kladusa, Bosnia-Herzegovina, Sept. 29, 2020.

Migrants from Bangladesh prepare food inside an abandoned factory near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

A migrant from Bangladesh stands inside an abandoned factory near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

A migrant from Bangladesh stands inside an abandoned factory near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

Migrants from Bangladesh carry a basket of water in the woods near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

A man stands in the woods before trying to cross the Bosnia-Croatia border as part of what migrants call "the game," in the woods near Velika Kladusa, Bosnia-Herzegovina, Sept. 29, 2020.

Migrants gather before trying to cross the Bosnia-Croatia border as part of a cat and mouse chase with border patrols in the woods near Velika Kladusa, Bosnia-Herzegovina, Sept. 29, 2020.

A migrant from Bangladesh rests inside an abandoned factory near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

A migrant from Bangladesh walks inside an abandoned factory near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

A migrant from Bangladesh checks his mobile phone in the woods near Velika Kladusa, Bosnia-Herzegovina, Sept. 30, 2020.

Migrants walk toward the Bosnia-Croatia border in an attempt to cross, in what they call "the game," near Velika Kladusa, Bosnia-Herzegovina, Sept. 29, 2020.

Migrants sit in a field as they prepare to cross the Bosnia-Croatia border as part of what they call "the game," in the woods near Velika Kladusa, Bosnia-Herzegovina, Sept. 29, 2020.

A man stands on a road before trying to cross the Bosnia-Croatia border as part of what migrants call "the game," in the woods near Velika Kladusa, Bosnia-Herzegovina, Sept. 29, 2020.