One Monster RPG is a free-to-play, top-down RPG with only one level 1 enemy and a level 99 protagonist. The main task is to fatten up the small harmless slime and turn it into a huge boss monster, so that you can then kill it and get level 100. By the way, you can kill the enemy at the very beginning, but this way the character will not achieve the desired result. To beat the game, you need to lure the enemy to places where innocent villagers live. The monster will feed on them until it eventually grows to a certain size. Then you need to kill the enemy, but you shouldn’t hope for a simple fight, because the monster will be much stronger than at the beginning of the passage.