The story of Action Replay takes place in a post-apocalyptic world where players control a young woman named Maya who is on a quest to find her lost sister. The world has been devastated by a catastrophic event known as "The Great Calamity" that turned most of humanity into monstrous creatures.
The gameplay revolves around action and stealth elements, with the player controlling Maya as she navigates through the desolate landscape in search of her sister. Players can choose from various allies to aid them on their quest, each with their unique abilities and strengths. The game features a range of enemies, from giant spiders to heavily armed human survivors.
Gameplay is divided into three main components: exploration, combat, and puzzle-solving. Exploration allows players to search for hidden items and secrets, while combat requires strategy and timing to take down the formidable enemies. Puzzle-solving introduces an element of challenge, as players must use their wits to unlock new areas and progress through the story.