Leveling

Each Growtopian has levels, and you can gain levels by breaking blocks, farming, and earning Achievements. All of those activites will give you XP. The highest level you can reach is lvl 99. Once you hit certain level milestones, you earn specific achievements. Making it to level 10, for example, gives you the "DING!" achievement, and reaching level 50 will give you the "Long Time Fan" achievement with a Mini Growtopian. Many players 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 more features to do with leveling in the future.

As of the 03/01/2016, The way XP is earned has changed according to Hamumu on the "Announcements" sub-forum.

Collecting gems does not give XP anymore. On the other hand, breaking blocks gives up to 20x more XP, depending of the rarity. The XP earned per block is calculated by rarity/5. For example, a Crystal Block would give 20 XP when destroyed.

Trees gives twice more as XP as they used to (Rarity/10) give when harvested.

Also, most of the mini-games such as The Carnival, Surgery, Fishing, using a Sewing Machine, and using a Forge.