Many games start with F! To suggest the right one:
Type: Board, video, card, party, tabletop RPG?
Genre: Strategy, action, puzzle, horror, family?
Players/Age: Solo? 2? Group? Kids? Adults?
Examples: Fortnite, Final Fantasy, Fallout, FIFA, Factorio, Fire Emblem, Fluxx, Forbidden Island, Five Tribes, Farkle, Fluxx, Formula D, Fox & Geese. Tell me more!