https://www.playstation.com/en-us/games/earthfall-ps4/

Earthfall Invasion is the most significant update to Earthfall yet! Invasion includes Invasion Mode, a new horde survival game mode with four new maps, a new Player Progression system, new perks, new abilities, and even remastered audio for weapons. Invasion is available now for FREE to all owners of Earthfall on PlayStation 4!
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