a video ? At the moment the coins are added but it's not "rewarding" experience to the user. In games that are native you can show how coins are added to the counter.
You would have to make it part of the action animation, and it have to be at the character or full screen I would think... It would just be a large scale animation overlay
If your character stays always in the same spot (and takes up the coins there too) - like for example in your endless runner - then you simply could make a linear movement towards the counter. You could even give it some circular movement with rotation. You would definitely have to play with it a little but I believe this is doable. And to round it up, add some animation to the object so it looks just the way you want it too.
Thank you @heathclose and @Christoph for your answers but I was misunderstood. I meant from the game over screen. The player has failed and got to game over. Then he pushes the watch video for coins button he watches the video and then ....... this is where the magic should happen
