Every good game needs a Dyson Sphere! This is where the earlier gravity experiment is put to use. The idea here is gravity from the star pulls your ship toward it. Get too close and you can't escape. The star may have to shrink down a bit. Getting proportions right in 4:3 aspect ratio is a bit difficult.
![](https://greenzeta.com/wp-content/uploads/2020/05/002_dyson-sphere.png)