Use this operation one players tier list to rank your favorites from best to worst. Drag items into S, A, B, C, or D tiers and share your operation one players rankings with friends. Whether you're debating the best operation one players or settling an argument, this tier list maker lets you create the perfect operation one players ranking and compare with other Americans on TierBuddy. Popular categories include gaming, video-games, single-player-games, games.