//I apologize in advance if there are mistakes in my words, I'm just from Belarus and I don't know English well (I use Google translator)\\
This is my first gamejam and my first game. My game is a platform game consisting of 6 regular levels, one boss battle, and one secret level. The main character is an ordinary green slime. His enemy is the dark slime. The levels have a variety of obstacles and secret keys. If you collect 6 keys in normal levels, and one in the boss battle, then a secret level will open. The game is currently 85% complete. Some screenshots from this game. 
(green slime) 
(dark_slime) 
(one of the potions)