Tube8 Adult addon has a few sections to choose from from latest, most viewed, top rated, most favorited, etc.

Installation steps for XBMC-Adult Repository and Tube add-on

Here is the step by step instructions on how to install the XBMC-Adult Repository and how to install the individual adult add-ons onto Kodi.

Enabling Unknown Sources within Kodi
(skip if already enabled)

• Open Kodi
• Select Settings
  
• Select System Settings
• Select Add-ons
• Turn on Unknown sources
• A warning will now appear asking if you agree that you are responsible for data loss, damage to device etc. As long as you are a sensible user then you are fine. Click Yes

Install XBMC-Adult Repository

• From your Kodi Home Screen
• Select Settings [Cog Icon, Upper left corner]
• Select File Manager
• Select Add source
• Select None, Enter: http://fusion.tvaddons.ag, click Ok
• Highlight the box underneath Enter a name for this media Source, type Fusion, then select OK
• Go back to your Kodi Home Screen
• Select Add-ons
• Select the Add-on Browser Icon [Upper left corner, unpackaged box icon]
• Select Install from Zip File
• Select Fusion
• Select Kodi-Repos, then XXX-Adult
• Select repository.xbmcadult-1.0.6.zip
• Wait for Enabled Notification [Top Right Corner]

(2) Second way of Installing XBMC-Adult Repository (if http://fusion.tvaddons.ag does not work)

Download the repository file here

https://github.com/xbmc-adult/xbmc-adult/raw/ghmaster/repository.xbmcadult/repository.xbmcadult-1.0.6.zip

• At  Your Kodi Home Screen
• Select Add-ons
• Select the Add-on Browser Icon [Upper left corner, unpackaged box icon]
• Select Install from Zip File
• Navigate to your directory you have your downloaded file.
• Select repository.xbmcadult-1.0.6.zip
• Wait for Enabled Notification [Top Right Corner]

So now you have the XBMC-Repository installed, you can now install the available 8 add-ons from this repository onto your Kodi software.

Installing the VideoDevil Adult Add-on from the XBMC-Adult Repository

• Go back to your Kodi Home Screen
• Select Add-ons
• Select the Add-on Browser Icon [Upper left corner, unpackaged box icon]
• Select Install from repository
• Select XBMC-Adult Addons
  
• Select Video Add-ons
• Select Tube8
• Select Install