Ultimate - !link! Fullscreen Clickteam Fusion

We will use the (free on Clickstore) and a bit of Frame Event logic.

Automatically handles letterboxing (black bars) for widescreen or non-widescreen displays.

If you insist on 4K, use the DX11 manager with a Pixelate shader. This renders the game at 1080p then scales it down artistically to 4K, hiding Fusion's internal scaling flaws. ultimate fullscreen clickteam fusion

Before writing a single line of code, you must understand the three "native" fullscreen modes in Fusion (2.5+).

The for retro developers isn't just about size; it's about integer scaling (2x, 3x, 4x). Never 1.5x or 2.5x, which causes pixel shimmering. We will use the (free on Clickstore) and

– Essential for serious ClickTeam Fusion developers who need polished, arcade-accurate fullscreen without native Fusion’s flaws. Casual or hobbyist users may find Fusion’s built-in “Fullscreen (stretch)” sufficient. Worth the price if you’re distributing commercial games.

Insert the Window Control object into your frame. In the Frame Editor, create a "Start of Frame" event. This renders the game at 1080p then scales

runtimes to allow Windows controls (like Edit Boxes) to function in fullscreen, which usually break in standard DX9 fullscreen. Steam Community How to Install & Use

By applying the techniques in this guide—Integer Scaling, Borderless Window hacks, and the right extensions—your Clickteam Fusion game will look professional, run on any monitor from 720p to 8K, and never show an ugly black bar or blurry pixel again.