[everythingabili]

I teach creative coding and maintain a site that has a list of creative tools (graphics, music, coding, writing, game-making) that are mainly free, and web-based. You can filter them by "easiness".

https://digitalcreativitytools.everythingability.com/

I made the site for university students, but I have tested/vetted all of the tools myself, often with my child who is now just 11. There are some activities you could do with her too. The Inspiration section might throw up some useful stuff for you both.

With regards to game-making, Scratch is a great starting point, but recently we have been really enjoying working with gDevelop - a free, no-code game engine. The videos on YouTube are great to get you both started. Twine (Chapbook) has been a fun tool for creating interactive adventure games, and this Zine-maker is ace https://alienmelon.itch.io/electric-zine-maker

[prawn]

My son is in the STEM extension program at his school (9-10yo) and they start with Scratch and then move up to Pictoblox (based on Scratch): https://thestempedia.com/product/pictoblox/

[RodgerTheGreat]

If you like Twine and Electric Zine-Maker, you might also enjoy Decker: https://internet-janitor.itch.io/decker