First of all, I love this game to death. I think the art style is super cute and cozy, and has a laid back feel to it. That being said, I am level 1500 with level 6500 offline time. There is simply no endgame past the third area, and I have nothing to spend my trillions of oxygen on. Anything from different purchasable backgrounds for an expensive amount, to customizable pots, to more worlds are a necessary addition to this incomplete masterpiece. Also, perhaps there should be special achievement plants for a certain amount of taps, money earned, total money earned, plants owned, etc. there should be a global leaderboard to accompany this, to compete to get the most oxygen, and the highest level. After a certain amount of time, the top 100 participants get a special plant that is unique to only them. Like I said, there is unlimited opportunity for this game, and as a programmer myself, I know that this stuff can be made possible. I hope to see some innovation and new updates soon, thanks again
Spencer