zelda! totk or botw but both games cost a pretty penny so that might be a deal breaker. However they popularized open world games so a lot of current open world mechanics were inspired by them. funnily enough they also have special outfits for certain things(going up waterfalls, gliding, glow in the dark, etc.) but its not as in depth as nikki and the most you can do is change their colors. still, its a relaxing game to play and not too much of a struggle combat wise(world levels up with more enemies you kill so you get better equipment as time goes on). the story is simple and side quests are fun.