loved it :D made it all the way to lvl 30 before calling it quits, im a huge fan of the genera lol
one recommendation I have for if you ever make something like this again ( spaced out for my sake):
I would recommend shortening the time between rounds, as well as lesseningthe resources spawned as the rounds get higher.
Like if round 10 has a 30 second delay between rounds, and spawns a total of 20 candy. make round 20 have a 20 second delay between rounds and spawn 10 candy. Or something like that.
And keep the timing and candy spawns consistent after a particular level. so level 30+ all have a 10 second delay between rounds and spawn 5 candy.
Doing something like this makes the later rounds slowly more overwhelming. Once you get your groove going, it stops being a "how long can I survive" and turns into a "how long do I want to keep playing".