I have made a scroller game where player moves to the right of the screen. I add a new uniform ground block about every 5 seconds.
I was wondering how often should I put bonus items. Currently I put them with 0.5 chance per added block of ground and if I fail to do, I do another 0.5 as a secondary chance. Once the player has enough number of items, then she can buy skins.
Is there a well known item distribution algorithm or a resource I can benefit from? I only have 1 type of item to keep it simple and the game is for mobile, but sounds like those items shouldn't be rare.