The match timer is an element that displays the time remaining in a time match on the top-right corner of the screen (top-center in Super Smash Bros. Melee). It can also appear in Bonus Stages, single-player modes, as well as on the Online Practice Stage when waiting in a lobby.
As of Super Smash Bros. 4, it is formatted as
The pre-match timer counts down the three seconds before the match starts, ending after "GO!". During this time, fighters make their on-screen appearance, and the music track is displayed in the top-left corner starting with Brawl.
In Super Smash Bros., the timer uses a horizontal stoplight. After lowering from offscreen with a large red light active, one smaller amber light activates for each second past, before a larger blue light labeled "GO" lights up and the stoplight rises back up.
In Melee, the timer uses a rapidly depleting meter with its own timer, under the text "Ready". A variation of this, without the timer and on-screen appearances, is used during single-player modes such as All-Star and Adventure Mode: World of Light starting with Brawl.
From Brawl onwards, the timer uses large numbers in the top center of the screen, similarly to the final countdown timer, and has different colors for each installment. Brawl uses blue (three), green (two), and yellow (one). All numbers are red in Smash 4 and flaming orange-red in Ultimate. The "GO!" text is colored vermilion in Super Smash Bros., blackish-yellow in Melee, brown in Brawl, silver in for 3DS, gold in for Wii U, and flaming orange-red in Ultimate.
Final countdown timer
The final countdown timer counts down the last five seconds before a time out, ending after "TIME!" ("TIME UP" in other regions). It also appears in single-player modes like Race to the Finish and Trophy Rush.
In Smash 64, the timer is only present via the announcer. From Melee onwards, the timer uses large numbers in the top center of the screen, with each number getting subsequently larger (except in Super Smash Bros. for Wii U and Ultimate). Just like the pre-match timer and the "GO!" message, the numbers have a different color. In Melee, the numbers are crimson before it was changed to red in Brawl and SSB4, and then to silver in Ultimate. The timer's appearance activates equipment with the Countdown bonus effect, and from Smash 4 onwards, prevents Star KOs, Screen KOs, and Finish Zoom.