There are a lot of things which I would improve:
- "Futter auf der Flucht" has a very strong connection to the gameplay, but it sounds very negative, nothing nice to play.
- the same with "sie sind dumm und gefrässig, aber sie gehören zusammen" - maybe worser. Not attracting!
- The dices have a special textures on them and I know why (the dices are making a big picture if they are stitched together during the story), but this is totally worse for the viewer. The dices also look akward because they have no eyes and the stuff doesn't fit nicely together - on this screen! Don't get me wrong, I see the eye-balls and this sort of "funny" drawn pupils. But this is very disturbing to the viewer.. I dont really like it. Please draw "straight" pupils.
- The whole thing looks also "not so awesome" because you are using actual game models - that is bad, especially with that lowpoly environment and wrong lighting and shadowing on the characters. Better make a render image with other textures which are cleaner and more joyful.
- Plus, they are just "standing around". In connection with the title which means motion and speed, .. it is in total opposite to the figures on the image.
- As I know, the green things are the food of the dices. But the reader watches only their back (no eyes??). Worse enough, one big green thing is in front of the title.
- You should use a better font for that subtitle and make a single logo of "Futter auf der Flucht". In addition, "running food" sounds better.. even if it is a german game - you don't know HOW many kids can speak english. They even learn that on elementary school. And please dont use these shadow/glow gimmicks. They don't work.
- You should revamp your whole product design when it comes to marketing things. I know that you have a small budget, but this "thing" is freaking me out

You have a lot of really cool locations in your game. Nevertheless, this image makes me freezing... goosebumps.. and so on. I really apologize if you feel offensed, but you should focus on finishing the game rather on coverdesign and hire/ask someone that has more skills on this topic.
Cheers,
Christian