Doom designer John Romero is releasing a new Doom II level to help support the people of Ukraine and related humanitarian efforts following Russia's invasion of the country.

Romero announced on Twitter that he is releasing the new level for the 1994 game for €5. 100% of proceeds will be donated to the Red Cross and UN Central Emergency Response Fund.

The level is called One Humanity, and it's the first Doom II level from Romero since the game was originally released in 1994. An original copy of Doom II and a modern source port are required. You can buy the new level from Romero's website here.