That is built into Windows. You can just tell it the folder to use for wallpaper and how often to change it. It's not a 'collage' like multiple images at once, you can have it sort of stretch them ...

There's a new game mode in Disco Elysium, and it's available to play right now.Collage mode - free for anyone who owns the base game - is a creative endeavor from developers ZA/UM that gives you ...

But most interesting of all, Collage Mode gives you the freedom to write your own dialogue for Disco Elysium, and make it look like it came directly from the game.“Fabricate completely new ...