Collector games are pretty simple – they are simply games where players traverse through the game and collect items. As you collect these items, you are able to trade them in to help you progress through the game.
For example, in our business game Lemonade Stand, players sell lemonade in return for money. As you collect more money, you are able to trade the cash in for more lemonade ingredients. It continues to snowball until you are doing better and better in the game and have collected massive amounts of money.
This doesn’t just apply to money. In Diggy, players are attempting to dig to the center of the Earth. While they are digging, players collect gems along the way. These gems can be traded in for better stamina and drilling equipment, until there are enough resources to get all the way to the center of the Earth.