Your goal is to murder as many monsters as you can, you can damage monsters by clicking on them. the number next to the skull icon will show how many monsters did you killed so far. If you kill a specific amount of monsters there will be a new monster you can encounter but the game will show that as you progress. If you kill a monster you get money for it! the more dangerous monster it is the more money you will get by defeating it. The number next to the coin icon shows how many money you have right now. And if you dont do anything about the monster near you he will start attacking you, every monster damages 1 on you. The number of your health shows up next to the health icon on the top left of the screen. But becouse every new monster will be stronger you have to prepaire for them, you can go to the upgrades by clicking on the top right corner where theres a butten says "upgrades". There you can upgrade your character with money! You can upgrade 3 types of things: 1. Click damage: If you upgrade your click damage you get 1 more strength, if u click on an enemy it will get a damage of the strength value (the strength value starts with 1 at the beginning of the game) but keep in mind that the upgrades get more expensive everytime you upgrade one (this is for all the upgrades) 2. Getting money If you upgrade getting money you will get a bit more money from defeating an enemy, the more you upgrade it, the bigger money you get from them. 3. Health You have 3 health at the beginning of the game, but you can increase that buy upgrading the health upgrade each time you do this you get 1 more heart. And this upgrade is way more expensive then the other ones One last thing, u can go to the monsterpedia by clicking the monsterpedia button on the right corner of the screen, and you can see what monsters did you discovered so far. and if you are currently in the shop or monsterpedia, the monsters cant damage you.