Yes, it’s definitely possible to make a good game within those constraints. Limitations like a 10MB cap and no external dependencies can actually encourage creativity and efficient design. Many great web games rely on simple mechanics, clever art direction, and tight gameplay loops rather than large assets or complex backends. That said, the scope would need to be carefully managed. Something small but polished, like an arcade-style game or a clever puzzle, would fit much better than a content-heavy experience...
As for whether I’d try if there were money involved: potentially, yes, but it would depend on the expected return versus the time investment. If the compensation felt fair for that extra effort, it could be a fun and worthwhile challenge. 😉