It's infinite - kind of inspired by many Game & Watch games or many arcade games in general. I used a combination of an exponential regression curve to make the levels ramp up in speed over time, and some parameters that make the quotas slightly more forgiving as the timer becomes more demanding. Other than that though, it's a randomised system. Thanks for checking out the game!

Honestly have no clue why that glitch would happen, thanks for letting me know. This was my first finished game and I had a lot of fun with it, so I'm totally looking forward to participating next year. Thanks for checking it out!

With more time I was going to add a currency system that would let you buy temporary power-ups like a time freeze or teleporter. Following that idea, I was going to have a system where you could end the timer early which would reward you with currency, making the initial rounds a bit more interesting. Thanks for checking the game out!

The aliens spawning in the loading bay is actually intentional, it's designed to get you to count them all within a small area.  Sometimes the level will want 10 aliens and the bay starts with 20 inside, so you have to count them out pretty quickly as you take enough out - that was the idea anyway. Thanks for checking out the game!