Leveling
Each Growtopian has levels you can gain XP or Level UP by breaking blocks , farming , earning Achievements and collecting gems. There is currently no known level cap. Once you hit certain level milestones you earn certain achievments. Leveling up to level 50 will give you a Mini Growtopian. There are a lot of players who think that the higher level you have the better you are, this is false as levels are only really a measure of how much farming a player does. Seth and Hamumu may add some more features to do with leveling in the future.
A good way to level up is farming an easy to break block like wheat or grass. Every block you break gives you 1 XP, and every gem collected gives you 1 XP (Blue Gem = 5 XP Red Gem = 10 XP Green Gem = 50 XP and Purple Gem = 100 XP) Farming an item that drops a few gems and is easy to break is a good way to level fast. It gets harder to level up above level 20.