ADDED: CAMPAIGN SYSTEM
Last patch you had four minutes to complete each level. That's a reasonable time limit if you already know how to play, but if you're playing for the first time that's not long enough for you to figure out what's going on. Now there are three difficulty levels, and the first difficulty level is untimed, so you have a chance to figure out how to play.
On the timed difficulty levels, instead of each level having a short timer, all levels share one longer timer.
CHANGED: PRESTIGE MECHANIC
Now you can choose to stay at the final objective tier to try to get to the earnings target or you can choose to prestige and reset the objectives.
When you prestige, you keep your upgrades, and the prices stay the same.
You want to prestige if you aren't making enough money or the upgrades are cheap. You want to stay on the final tier if you're close to hitting the earnings target or you think you can beat all the objectives easily.