Peach's Castle 64 is a downloadable stage in Super Smash Bros. Strife, returning from the original Super Smash Bros.. The stage is set on a series of unconnected platforms floating high above the castle of Princess Peach as it appeared in Super Mario 64 (which makes sense, as the Japanese version of the game names it ピーチ城上空, Pīchi-jō jōkū, meaning "Above Peach's Castle").
Despite being named after Peach's Castle, the stage itself has very minimal reference to the location outside of it appearing in the background; notably, a tower stands in the centre of the stage's background which appears based on those found on the exterior of the castle, while two trees that take their appearance from Super Mario 64 stand beside it. The large tower protrudes from a small circular platform, which acts as a solid platform for players to fight on. Above it is an uneven platform seemingly made from various wires, which can also be stood on and acts as a semi-soft platform. The main platform also has a large protrusion from its bottom, and a long solid platform moves from one side to the other slowly through the centre of the stage.
Floating independently from the platform on which the tower stands are two right-angle triangles, located in the corners of the stage near the blast lines. These platforms can not be stood on, and primarily push items and falling fighters back towards the centre arena.
A small bumper, which retains its appearance from the original Super Smash Bros., appears at the top of the stage, in its centre. The bumper moves left and right a short distance at random. Like its item counterpart, it knocks away fighters that touch it, making it a reliable KOing tool.
Additionally, while it causes no damage, the platform that travels in-between the bottom of the tower's base platform and its extension will extend all the way through, meaning that if a fighter remains stationary on it for too long they will be pushed off once its end reaches the centre of the stage.
"Peach's Castle 64" is a direct rip of the theme that plays on the Peach's Castle stage from Super Smash Bros..
Mushroom Kingdom 64
"Mushroom Kingdom 64" is a direct rip of the overworld theme from Super Mario Bros., which also played on the Mushroom Kingdom stage in Super Smash Bros.. When the timer reaches 30 seconds in a timed match, the last character is down to their last stock in a stock match, the HP is under 100, or in Sudden Death, the song speeds up, just as it did in Super Mario Bros. when 100 seconds were left on the timer.
"Bowser's Road" is a direct rip of the Bowser level theme from Super Mario 64.
"Slide" is a direct rip of the theme that plays while on a slide in Super Mario 64.
Main Theme (New Super Mario Bros. Wii)
"Main Theme (New Super Mario Bros. Wii)" is a direct rip of the overworld theme from New Super Mario Bros. Wii.
Athletic Theme / Ground Theme (New Super Mario Bros. 2)
The "Athletic Theme / Ground Theme (New Super Mario Bros. 2)" remix from Super Smash Bros. 4, unchanged.
"Champion's Road" is a direct rip of the Champion's Road, Honeycomb Starway, and Honeycomb Skyway theme from Super Mario 3D World.
Super Mario Galaxy
"Super Mario Galaxy" is a direct rip of the credits theme from Super Mario Galaxy.
Inside the Castle Walls
"Inside the Castle Walls" is a direct rip of the Princess Peach's castle interior theme from Super Mario 64. The PAL versions of the game instead refer to this track as "Inside Peach's Castle".
Main Theme (Super Mario 64)
"Main Theme (Super Mario 64)" is a direct rip of the Super Mario 64 title screen theme.
"Rainbow Castle" is a direct rip of the Rainbow Castle map theme from Mario Party.
Exhibition Match (Mario Tennis)
"Exhibition Match (Mario Tennis)" is a direct rip of the exhibition theme from Mario Tennis.
Princess Peach's Castle
The "Princess Peach's Castle" stage theme from Super Smash Bros. Melee.
"Toad's Turnpike" is a direct rip of the theme that plays on the course of the same name from Mario Kart 64.