Step The Portal is a 2D game, where your mission is to get to the end of the levels and reach the portal to earn coins and go to the next level. You can also find some hidden levels, which can help you to earn more coins.
Coins are used to purchase upgrades for your health, gun, and score. They give you additional heart, more damage, and double coins. You can also buy some cosmetics, which are heart cosmetics, which changes your health look, coins cosmetic, which changes the look of coins, and character cosmetic, which gives you a new character. You can equip every cosmetic you bought in your inventory.
Step The Portal also has minigames in each chapter, which are used to earn additional coins and just to enjoy.
You can also earn coins by writing promocodes. They give you coins or sometimes new cosmetics. One of these codes is 'DeDeBUGcode 23', and it gives 500 coins to your total score.