I think "tech trees" is just the wrong word because it only will be familiar to people who've played Age of Empires. Maybe "worlds" instead, it's a more univers

I think "tech trees" is just the wrong word because it only will be familiar to people who've played Age of Empires. Maybe "worlds" instead, it's a more universal concept (I think). Starfighter is a game with lots of worlds. In each world there's a whole bunch of levels. Finish one level, move to the next. There's no "last level" or "final boss" because every few weeks new levels appear. Sometimes whole new worlds are created too. Each world is totally different and getting good at one might not help you in another (think of it like a video game, where in some worlds you walk on land but in some you have to swim, and in some you have to walk upside down). If you finish all the worlds you might get offered a job so you can do more levels in real life.