This guide provides key recommendations to help you create the right amount of content within the constraints of the 300x600px ad format.

Graphical assets

Background size

For the 300x600px ad format, we recommend designing your background at 600x1200px to ensure optimal display on all devices, including high-resolution screens.

ℹ️ Tip for accommodating high resolution screens

Retina screens pack more pixels into the same space, which makes images look sharper and clearer. If you design your ad graphics at their exact size, they may appear blurry on these high-resolution screens. To prevent this, it’s best to create your banner graphics at double the size. This ensures that, even on Retina screens, your ad will look crisp and clear.

Our design guide takes this into consideration, providing recommendations to ensure your ads look sharp, regardless of the screen they’re displayed on.

Font sizes

H1	Max. 32 px
H2 & H3	Max. 24 px
H4	Max. 20 px
H5	Max. 16 px
Body content, form fields and links	Max. 16 px

Registration page

Headline (H1, H2, H3)	Maximum of 20 characters
Text	Maximum of 80 characters
Image size	Size: 600x600px
Button label	Maximum of 15 characters

Game page

Asset recommendations may vary based on the game type. Please refer to the game specific design guides for detailed recommendations.

When designing for smaller ad formats like 300x600px, you may need to resize assets to maintain their clarity and quality. The smaller the ad, the more careful you need to be with asset scaling to ensure that the user experience remains consistent and high-quality.

Use the game-specific guidelines as a reference and make adjustments to the assets as needed to ensure the best user experience across different formats.

Results page(s)

Here’s a guide for the amount of content you should include on results pages, like the winner and loser flow pages

Headline (H1, H2, H3)	Maximum of 45 characters
Text	Maximum of 150 characters
Image size	600x600px
Button label	Maximum of 15 characters