A green game research report put "Collection! Animal Forest Friends and Resident Evil: Village are listed as one of the most environmentally friendly games. They calculated the carbon footprint of a variety of mainstream games and devices by measuring the number of players, host energy consumption, and playtime.
"Collection! Animal Friends toped the list of the least carbon emitters, earning the title of the most environmentally friendly game based on the number of players, host energy consumption, and playtime. According to Green Gaming's calculations, Switch games release 0.003 kg of carbon dioxide equivalent per hour. While this game has a high number of players, it has a low carbon footprint due to the Switch's relatively low power consumption, especially compared to more powerful consoles like the PS5.
It is estimated that "Collection! Animal Forest Friends has about 232528 players: According to a report by HowLongToBeat, "Collection! The average play time of the players of the Animal Friends club is 60 hours, and considering the KWh of the Nintendo Switch and the resulting emissions, it can be calculated that the game produces 3038.98 kg of carbon dioxide emissions per year.
On the other hand, the games with the highest carbon emissions are online games such as League of Legends, Fortnite, Apex Heroes, and Call of Duty: Warzone. League of Legends led the way with 58,379 tons of CO2 emissions, while second-place Fortnite had 6,425 tonnes.
League of Legends is one of the most visited online games, with an estimated 2.3 million online players. Considering that a normal computer host produces 0.023 kilograms of carbon dioxide per hour, while players spend an average of 1,008 hours in the game, this generates a large amount of carbon dioxide emissions every year.