Sweet Fuse: At Your Side is an adventure game meets dating simulation where the player becomes Saki, the fictional niece of famous game producer Keiji Inafune himself. Inafune runs the largest amusement park in Japan featuring numerous attractions based on popular video games, and Saki is invited to its grand opening. However, a mysterious villain suddenly threatens to blow up the whole park unless Saki can successfully master the puzzle minigames at each attraction while rescuing any hostages.
Saki will be accompanied by a cast of six attractive men, and the player can choose to form a relationship with each depending on their interactions with them. There are a total of 14 different endings to unlock based on these interactions.
Former Capcom artist and producer Keiji Inafune lends his name and likeness to Sweet Fuse as the player's uncle, just one of the many eccentric characters to meet in Sweet Fuse.