April Fools' Day 2021

For April Fools' Day 2021, a channel event themed around the discontinuation of ' and ' occurred on the SiIvaGunner channel, starting on March 31, 2021.

Rips uploaded
The event was foreshadowed with a series of three  rips counting down to the discontinuation of Super Mario 3D All-Stars, featuring Super Mario 64 on March 29, Super Mario Sunshine on March 30, and Super Mario Galaxy on March 31. Additionally, all rips uploaded on March 31 were of games from the Super Mario franchise and/or featured songs from Super Mario games as jokes.

March 31 ended with the rip "Super Mario 3D All-Stars Music SM64 Game Over", which depicted Mario disappearing. Afterwards, all references to Mario were removed from the rip's metadata, the Grand Dad in the lighthouse was replaced with Fred Flintstone and nearly every single Super Mario rip on the channel was set to private.

Subsequent rips continued to reference the theme of Mario being erased in various ways. The vast majority of these rips were of "the Super Bros. franchise", a group of fake game substitutes for Super Mario games in which Mario is no longer present. Though most of the Super Bros. games ripped merely omitted Mario from their titles and thumbnails, rips of ' and the games within it (', ', and ') still contained traces of his name, albeit heavily corrupted or partially obscured. After the last rip of April 1, "Staff Roll - Super M̸̌̊a̴͛̿█̸͌̑i̵̛͊█̷̾̓ 64", the channel went silent for most of the following day (except to upload "Dad Battle (In-Game Mix) - Friday Night Funkin'", which revealed that Gangsta Mario had also been erased).

Towards the end of April 3, a rip where Mario's name was legible in the title, "Ultimate Koopa Clear - Super M̶̲̉a̷̔̐r̵̪̈́i̸̐͗ȏ̵̇ 64", was uploaded. A few hours later, the video "A Leap of Faith - SilvaGunner: Rebooted" was uploaded, which showed the Super Mario games, as well as Mario himself, being restored. Four more rips alluding to the event's end were uploaded, concluding with "Staff Roll (JP Version) - Super Mario 64DD" on April 4. The majority of the privated rips were un-privated, and the Fred Flintstone in the lighthouse switched back to Grand Dad. This may be a reference to how April 4, 2021 was Easter, since Mario returned after being "dead" for 3 days.

Timeline

 * March 29: Clock Town, First Day (Removed Version) - The Legend of Zelda: Majora's Mask (amidst other rips)
 * March 30: Clock Town, Second Day (Removed Version) - The Legend of Zelda: Majora's Mask (amidst other rips)

March 31

 * Super Mario 3D All-Stars Music SM64 Slider Beta Mix
 * Last Day (Removed Version) - The Legend of Zelda: Majora's Mask
 * Athletic BGM (Alternate Mix) - Super Mario Bros. 3
 * Super Mario 3D All-Stars Music SMG Space Athletic
 * Athletic Theme (Yoshi) - Super Mario World
 * Clock Town, Third Day (Removed Version) - The Legend of Zelda: Majora's Mask
 * Above Ground BGM (Alternate Version) - Super Mario Bros. 3
 * Perry Cutscene - Phineas and Ferb: Ride Again
 * Underwater Theme (Alpha Mix) - Super Mario Bros. 3
 * Emerald Hill Zone (2 player) (OST Mix) - Sonic the Hedgehog 2
 * Ground Man Stage - Mega Man & Bass
 * Course Clear Fanfare - Super Mario Bros. 35
 * Athletic Theme (Unused PAL Version) - Super Mario World
 * Slider (Aircheck) - Super Mario 64
 * Big Robo Bug - Mario Paint
 * Game Over (JP Version) - Super Mario Bros. 3
 * Athletic Theme (Alpha Version) - Super Mario Land 2
 * Goodnight Mario - Paper Mario: The Thousand-Year Door
 * Super 3D All-Stars Music S64 Game Over

April 1

 * Opening Cutscene - Hotel
 * Super █████ 3D All Stars Music S█64 Super █████ 64 Main Theme
 * Game Over (Beta Mix) - Sonic the Hedgehog 2
 * Slot Machine - Super 3D World
 * Lost Valley (Trailer Version) - Sonic Forces: Speed Battle
 * Underwater Theme (Alpha Mix) - Super Bros. 3
 * Possessed Staircase Battle ~Medley~ - Luigi's Mansion: Dark Moon
 * Ultimate Koopa - Super 👉█̸͌̑█̷̾̓😁̶̆͠☼̷̇̃👈̸̂͑█̷̾̓█̾̓ 64
 * Underwater Theme - Super World
 * World 7 (Clouds) - New Super Bros.
 * Ground Theme (Super Luigi Bros.) - NES Remix 2
 * Labyrinth Fight (OST Version) - Cave Story
 * Rainbow Road - Kart DS
 * My Hero (Menu Preview Version) - Rock Band 2
 * Athletic Theme (Unused PAL Version) - Super World
 * Super Bros. Music - Miss ~ Game Over
 * Music Box (Beta Mix) - Super Bros. 3
 * Fawful, Cackletta - Luigi: Superstar Saga
 * Ground Man Stage - Mega Man and Bass
 * Super Bros. Music - Ground Theme
 * Peach's Message - Super 64 DS
 * Rugby Sevens (Point Scored) - Sonic at the Tokyo 2020 Olympic Games
 * Perry Cutscene - Phineas & Ferb: Ride Again
 * Super █████ 3D All Stars Music S█64 Super █████ 64 Main Theme (JP Version)
 * Bros. Music - Bonus Stage
 * Cave Dungeon - Super 64 DS
 * Big Robo Bug - Paint
 * Super Bros. Music - Invincible
 * Athletic Theme (PAL Version) - Super World
 * Character Selection (Version 1.1) - Gangster Bros.
 * Luigi Mansion - Hoops 3 on 3
 * Pause Sound Effect - Super Bros. 3
 * Overworld Theme - Super World
 * Above Ground BGM (Alternate Version) - Super Bros. 3
 * Tropical Resort - Act 2 (Beta Mix) - Sonic Colours (DS)
 * Level Intro - Wario
 * Under the Ice (Unused Version) - Pinball Land
 * Deep Core - Sonic Rush Adventure
 * Shine! - Super M̸̌̊a̴͛̿█̸͌̑i̵̛͊█̷̾̓ Sunshine
 * File Select - Super 64 DS
 * Bros. Music - Title Theme
 * Koopa's Road - Super M̸̌̊a̴͛̿█̸͌̑i̵̛͊█̷̾̓ 64
 * Isle Delfino (Removed Version) - Super M̸̌̊a̴͛̿█̸͌̑i̵̛͊█̷̾̓ Sunshine
 * Kamek's Library - Party DS
 * Steam Gardens (CD Version) - Super Odyssey
 * Overworld Theme - New Super Bros. Wii
 * Secret Course: Sky & Sea - Super M̸̌̊a̴͛̿█̸͌̑i̵̛͊█̷̾̓ Sunshine
 * "It's a me, Mari!" - Super Mari 64
 * Gusty Garden Galaxy - Super █̴̧̀a̵̤̐r̷̙̋█̶̰̆o̶͚̚ Galaxy
 * Athletic Theme (Alpha Mix) - Super Land 2
 * Opening - Super M̸̌̊a̴͛̿█̸͌̑i̵̛͊█̷̾̓ 64
 * Emerald Hill Zone (2 player) (OST Version) - Sonic the Hedgehog 2
 * Bowser Castle - Super Odyssey
 * Slider (Rain) - Super M̸̌̊a̴͛̿█̸͌̑i̵̛͊█̷̾̓ 64
 * Staff Roll - Super M̸̌̊a̴͛̿█̸͌̑i̵̛͊█̷̾̓ 64

April 2

 * Dad Battle (In-Game Mix) - Friday Night Funkin'

April 3

 * Ultimate Koopa Clear - Super M̶̲̉a̷̔̐r̵̪̈́i̸̐͗ȏ̵̇ 64
 * A Leap of Faith - SilvaGunner: Rebooted
 * "It's a me, Mario!" (Mario Mix) - Super Mario 64

April 4

 * Birth - Super Mario Galaxy
 * Good Morning Mario - Paper Mario: The Thousand-Year Door
 * Staff Roll (JP Version) - Super Mario 64DD

Privated rips
The beginning of April 1 saw the privating of almost every video in the channel's history that included the word "Mario" in the title. This included the most viewed rip on the channel, 39 other rips featured in the "Popular uploads" section, and the contents of most Super Mario game playlists (many of which were among the largest playlists). This mass privating had two exceptions: The following rips were also privated: This totaled to at least 1751 privated videos. However, the (effectively empty) playlists could still be viewed; some of them had the equivalent "Super Bros." rips added.
 * "Vanish Mario - Super Mario 64" (in reference to the event theme)
 * "SEQ_MARIOKART - Mean Girls (DS)" (either a reference to the game's lost status at the time, or an error due to "Mario" not being a whole word)
 * All rips uploaded on March 31, 2021.
 * Rips from ', ', and , as these games featured Mario on the thumnbail.
 * Rips from , due to the game's English translation also being discontinued after March 31.
 * Rips from  that had Mario's presence on the thumbnail, though they were privated a few hours later than the other ones.
 * "Dad Battle (In-Game Version) - Friday Night Funkin'", which was privated after the upload of a Mario-less version of it on April 2.

On April 4, all rips privated during the event were un-privated, with some delay for "Dad Battle (In-Game Version) - Friday Night Funkin'" and "Steam Gardens - Super Smash Bros. UItimate". This also resulted in the accidental republication of "Mario kart 8", "Beware the Forest's Mushrooms (Beta Mix) - Super Mario RPG", and the initial upload of "Level 2 (Sewer) - Gangster Bros.".

Message
At 9:21pm PDT on April 1, 2021, the @GiIvaSunner Twitter account posted a coded message written in a substitution cypher, with the additional message "FOUND WHEN WE RETURNED / #1". This message has been decoded as follows: I AM SIIVAGUNNER I ONLY UPLOAD HIGH QUALITY VIDEO GAME RIPS BUT I AM NOT ENTIRELY INNOCENT IN THE CREATION OF MY LIFE THAT OF ANOTHER WAS TAKEN I WISH I GOT TO LEARN HIS NAME BEFORE HE PASSED I WONDER WHAT HE WOULD THINK OF ME NOW THIS WAS THE FIRST OF MANY REGRETS BUT I FEAR THAT It is currently unknown if this message has direct connections with the event, if any.