Thanks for playing! We are glad you liked it. Nice job getting to 1k! My normal playthroughs were around 800. I wonder what the game average is. Makes me think we should have a high score system in place.
A bit of info on the challenge:
The max enemy ships allowed in play increases every 30 seconds. It starts at 100 and then maxes out at 500 total ships in play. Based on the formula we have in place it would take about 2 hours and 5 minutes to max out at 2 ships per interval. After the jam this will go down to about 10 minutes. The rate at which the enemy ships appears increases every 60 seconds. Down to 1 second. This comes out to 10 minutes before you have 1 ship spawning each second. The original thought was to allow for a difficulty setting, but we opted for a ramp up over time difficulty.