the control upgrades are unlocked when you buy all the season upgrades, not when you get 12 billion people. still, incredibly fun game

1. this is not an idle game.
2. the enemy gets the most OP item in the game. SKULL (-50% production speed per skull)
3. the Skull is practically unkillable due to the fact it stays in the back nearly all the time.
4. the game end screen is a seizure warning 1000000%
5. the spring and winter season is very unfair.

Ways to improve the game.
1. The skull enemy doesn't half production speed (25% at most is sigificant enough)
1.5. the reason i said this. the moment the skull hit the field it downhill no way of progression further.
2. spring is RNG what blocks gets hit change that to all sides of the field and the upgrades only protect your side.
3. Winter should lock down a collum neither side can use it. and the snowmen work for both sides.
4. spaceship is MEH. IDK what the keys even do.
2.

Let me start by saying that this is a very fun game! Great work, dev! I have some advice to help make it better!
1) This is not an idle game in any way. If you leave it unattended, you progress to harder "years" without powering up to match the increasing power of the enemy. This game should have a toggle between "progression" and "idle" modes, where the year starts over if desired. I realize the description does say "with idle elements", but in truth, an unattended game = failure and a need to start over.
2) That's all i have for now, please, other users, add some advice!
Please keep working on this. This game is great but it could be a real gem. Very few devs actually update their games, but if you do, it might become a front page.

This game is my most favourite idle game ever.