There's a bunch of great programming games available on Steam. A lot of them start pretty basic, so might be useful for teaching the basics and driving interest.
7 Billion Humans and Human Resources Machine (same developer) are probably the most kid friendly ones I've played. TIS-100 I found quite fun, but it's assembly like programming which might be a hard starting point for kids. Zachtronics also make some good games, but the ones I've played are more programming games masquerading as something else E.g. chemistry with SpaceChem.