The Community Effort Orlando series, or simply CEO, is an annual fighting game tournament series typically held annually in Orlando, Florida. CEO is widely recognized as one of the premier events for fighting games. The event is hosted and organized by Alex Jebailey and CEO Gaming. The series has held events for Super Smash Bros., Super Smash Bros. Melee, Super Smash Bros. Brawl, Project M, Super Smash Bros. for Wii U, and Super Smash Bros. Ultimate.
The tournament series began in 2010, with Super Smash Bros. Melee and Super Smash Bros. Brawl as side events. The two games would be dropped after CEO 2011, but Melee would later return alongside Project M on the official game lineup at CEO 2014. Super Smash Bros. for Wii U would later be introduced at CEO 2015, replacing Project M on the official lineup. For CEO 2019, for Wii U was replaced with Super Smash Bros. Ultimate. Melee was absent from CEO 2021, making Ultimate the sole Super Smash Bros. event at the tournament. However, Melee returned at CEO 2022 alongside Ultimate.
The CEO Dreamland subseries is dedicated entirely to Super Smash Bros., and features all official Smash games as its only main events. So far, two Dreamland events have been held, one in 2017 and one in 2020.
List of tournaments
Melee Winners 
* Melee was a side event in 2010 and 2011.
Project M Winners
* Project M was a side event in 2015.
Smash 4 Winners 
Ultimate Winners 
Smash 64 Winners (side event)
Brawl Winners (side event)
* The top 4 players decided to split.