The Phineas and Ferb Takeover was a channel event where Phineas and Ferb took over SiIvaGunner. It celebrated the release of Phineas and Ferb the Movie: Candace Against the Universe on Disney+. The event was revealed through the video "Phineas and Ferb Takeover Reveal || SiIvaFes".
The avatar was changed to depict Ferb with characteristics similar to the SiIvaFes avatar and the banner was changed to depict the lighthouse in the art style of Phineas and Ferb, with a satellite on it and inside the backyard's tree, with Perry the Platypus' rocket car next to it, as well as the giant floating baby head in the distance. Phineas and Ferb are also present under the tree.
The channel description during this event was:
Yes, yes we are.
(All content is willingly submitted by a team of content creators currently on summer vacation; if you use a video for your content, please credit the channel, and do not monetize it if said content consists primarily of/is centered around the video in question.)
All rips uploaded during this event featured music from the show Phineas and Ferb (except for two rips that used music from Milo Murphy's Law). Notably, there is a lack of music related to the Doofenshmirtz/Perry plotlines of the show, foreshadowing the next event.
All rips uploaded during the takeover had the video description catchphrase changed to "Aren't you a little young to be reading the channel description?", referencing a running gag from the show (with the channel description itself providing the characters' usual response).
- See also: Category:Phineas and Ferb Takeover
- Natsuiro Egao de 1, 2, Jump! (ELI Mix) - Love Live! School idol festival
- Intro (In-Game Version) - Phineas and Ferb
- Circus (Summer Mix) - Five Nights at Freddy's
- Rec Room (US Version) - Super Mario 64 DS
- SK Title Screen (Alpha Mix) - Sonic the Hedgehog 3 & Knuckles
- Jet Set Groove #3 - Jet Set Radio Future
- Rec Room (Beta Mix) - Super Mario 64 DS
- Fillbots 2 - Rhythm Heaven Megamix
- Opening Theme (OST Version) - F-Zero
- Crazy Noisy Bizarre Town (Unused Mix) - JoJo's Bizarre Adventure: Eyes of Heaven
- Backyard - Phineas and Ferb
- Options Menu - Phineas and Ferb
- Lusties Nightclub (Unused Version) - Huniepop
- Super Mario All-Stars Music - SMB1 Underground (Alpha Mix)
- Boss - You Break It, You Buy It! - WarioWare: Touched!
- Luigi's Mansion (NTSC Version) - Mario Kart DS
- Quirky Worky Song - Phineas and Ferb: Quest for Cool Stuff
- Smooth (Short Version) - SingStar '90s
- You Win! - Nestlé Crunch: Challenge
- Overworld (Super Mario Bros. 2) - Super Mario Maker 2
- Circus (Brand New Mix) - Five Nights at Freddy's
- Versus Results - Dr. Mario
- Jingle #7 - Phineas and Ferb
- Big Rock Finish B (Beta Mix) - Rhythm Heaven
- Desert Ruins - Zone 4 (Alpha Mix) - Sonic Lost World
- Loading Screen (Beta Mix) - PaRappa the Rapper 2
- Main Theme - The Big Bang Theory Game
- Major Cooking Success - The Legend of Zelda: Breath of the Wild
- Jingle: Good Response - Tomodachi Collection
- Roller Coaster Menu - Phineas and Ferb
- Dance Mr. Funnybones - The Henry Stickmin Collection
- Feel Good Inc. - Guitar Hero 5
- King Conga Kappa (King Conga) (Alternate Mix) - Crypt of The NecroDancer
- Dirty Harry - SingStar
- Circus (Run the Mix) - Five Nights at Freddy's
- Didn't Fall! (You Win) - Fall Guys: Ultimate Knockout
- 6PM - Animal Crossing: New Horizons
- Tonight Tonight - Rock Band 3
- Upgrade Item Menu - Phineas and Ferb
- Rec Room (Alpha Version) - Super Mario 64 DS
- Corruption - Terraria
- World 1-3 - Phineas and Ferb: Ride Again
- Traveling the Woods (US Version) - Kirby: Squeak Squad
- More Mischievous Blues - MOTHER 3
- Time To Make History - Persona 4 Golden
- Crypteque (1-2) (OST Version) - Crypt of the NecroDancer
- Happy & Sappy - Paper Mario: The Origami King
- Track 1 - Phineas and Ferb: Ride Again
- Credits - Phineas and Ferb
- "I know what we're gonna do today! (includes link to "Natsuiro Egao de 1, 2, Jump! (ELI Mix) - Love Live! School idol festival")"
- ""Watcha riiiiippin'?" (includes picture of Isabella)"
- "The SiIvaGunner Fan Server is turning 4 years old this Sunday! To celebrate, there are lots of fun events being planned, so be sure to join in on the fun!"
- "It seems people are asking for rips about Perry. He's a platypus, they don't do much."
- ""Wait, Phineas and Ferb have a Twitter now?? And what's this about a 'fan server'?!" (includes picture of Candace using her computer)"
- ""Candace, I don't know what you're talking about. All I hear is normal video game music." (includes picture of Candace trying to bust her brothers)"
- "Hey, where’s Perry?.."
- Playlist by Arthur101