I was just thinking of an idea but my brain is like on a holiday. So if any ideas pls

A Roguelike, where the hero will keep his memory after each death, but the world will be reverted back in time (Something like in the Re:Zero or Legend of Zelda: Majora’s mask). So

1. Theme - you have to collect 7 crystals of power (each opens some game mechanics).
2. Progression - if the player stands in place and do nothing (almost) his mind is restoring.
3. Fall - The game is build of falling of the player: he cannot win without deep known of the story.
4. Randomness - You could create side quests randomly for each world cycle.

Hope it helps.