Hi! Thank you so much, I'm really glad you like my work and that you're considering using it in your game.
As for the package development, I already have future expansions planned that will focus on new robots and alien creatures. I must admit I hadn't considered adding sci-fi fantasy elements until now, but your suggestion is a great idea and I'd love to develop something in that direction!
I can confirm that the license terms are exactly as stated: commercial use is permitted, and no attribution or credit is required. However, if you do decide to include me in the game's credits, I would be absolutely thrilled!
Thanks again for your support, and talk soon!