Currently, a single career playthrough is balanced to last a decade (10 seasons). We're constantly working to improve the game and we'd love to add more decades, so hopefully, it's feasible for us to do it in the future!

If you're looking for things to do, you can try to unlock all achievements or you can have a look at the Workshop and check out the amazing mods created by the community.

The 10 years limitation is ugly: I suck and it took me 10 years to get to n.2 and I was stretching my limbs to get to n.1 only to be told "Thank you, goodbye". Not fun.
I'm not gonna start again from scratch. I'm just gonna leave, frustrated that "my game" was cut short...