Adding custom mods
By default, Bloxstrap provides three mod presets for enabling the old death sound, mouse cursor, and disabling the desktop app, easily and quickly. Though, you may want to add your own mods to customize further.
Before starting, you'll have to open your mods folder through the Bloxstrap Menu.
The mods folder is where you can apply modifications to Roblox files while ensuring that they're preserved whenever Roblox updates.
The Roblox game client is stored in a version folder, where mods are automatically applied to whenever Roblox launches. You can think of the mods folder as a reflection of the version folder.
For example, placing a file at content\sounds\ouch.ogg in the mods folder will automatically replace content\sounds\ouch.ogg in the version folder. In this case, it replaces the death sound, which the old death sound preset does. This replacement process is performed and checked every time that Roblox is launched.
When you remove a file from the mods folder, Bloxstrap restores the original version of the file the next time Roblox launches, if there was an original version.
You can use any existing Roblox file mod packs with Bloxstrap. A good place to look would be on GameBanana, which is where most people choose to share their mods. Keep in mind that whatever files or folders you're guided to place into your version folder, you place into the mods folder instead.