It's a really interesting question, and I think there are a few reasons why simple games can be so addictive. This article explains a lot of why crash-style games have this impact on people's time, and you can read it here: https://timesloom.com/blog/why-crash-style-games-fit-the-fast-pace-of-mobile-entertainment/. One thing is that the short feedback loops create a sense of constant progress, even if you're not really achieving anything substantial. But there is also the sense of accessibility and easiness. The lower the initial barriers, the faster you are hooked in, and also the less likely you are to quit and bounce after a few plays.
It's a really interesting question, and I think there are a few reasons why simple games can be so addictive. This article explains a lot of why crash-style games have this impact on people's time, and you can read it here: https://timesloom.com/blog/why-crash-style-games-fit-the-fast-pace-of-mobile-entertainment/. One thing is that the short feedback loops create a sense of constant progress, even if you're not really achieving anything substantial. But there is also the sense of accessibility and easiness. The lower the initial barriers, the faster you are hooked in, and also the less likely you are to quit and bounce after a few plays.