You can modify they at will, for any usage! Still, you can't sell the derivatives. Have a good study, and feel free to tag me on anything you create with them! I'm happy to take part at your history as artist and gamedev!
Awww thank you so much! I am still learning on game developing and wanna try to make my own pixel art even i am not an artist haha, but i am intrigued by your art! Thank you so much Studio SoulAres! :D
