The game system in Realm Grinder is simple: starting out you've got to tap the screen nonstop to get money and be able to buy buildings of all kinds – farms, inns, blacksmith's forges, and lots of other kinds of establishments that provide money automatically. What kind of empire you build depends on the decisions you make and the alliances you build with different races along the way. Realm Grinder is an idle clicker with a certain strategic component where your aim is to build a huge empire starting with just a small village.