Thank you for trying out my game, and for the feedback.
I'm glad you had fun and I completely agree with both of your complaints. I had a lot of trouble making the game intuitive to the player and it definitely does not have a win condition built in. Both of these elements were more of an afterthought than an integral part of the game throughout it's development.
I hope to work harder on both of these aspects in my next game.
Btw - The way you get more gears is by having more cats on the planet at one time. Each cat gives you a certain amount of gears per second. The way you get more cats is by keeping your O2 and CO2 levels in the "healthy zone". Again this is far from intuitive, but just a heads up for anyone else who wants to try out this game!