Super Smash Bros. has been around since 1999 and is easily the number one crossover fighting franchise of its type. While Mortal Kombat, Street Fighter, and Tekken dominate the classic style of fighting game, Super Smash Bros. has inspired and proven to be a major influence for games centered around four-player competition with platforming aspects involved.
Source:https://www.cbr.com/greatest-smash-bros-inspired-games-ranked/