Skills that I suggest be added to the game: (pls credit me for it)
1. Turtle go brrrr (cost 5 levels) The turtle collects all coins instantly.
2. More levels (cost 3 levels) Xp gain +50%.
3. Who needs grenades? (cost 1 level) In the UFO fight, bullets now deal 1% of grenade damage.
4. Ball Knife (cost 2 levels) Get a knife that will kill a random ball every 10 seconds.
5. Sharpen Knife (cost 4 levels) Knife cooldown is decreased by 20%.
6. Supa Sharp Knife (cost 8 levels) Knife cooldown is decreased by 20%, again.
7. Lottery (cost 2 level) Balls have a 1% of giving 5 times the rewards.
8. Lottery upgrades (cost 4 level) Lottery chance and multi can now be upgraded.
9. Splash damage go brrrr (cost 5 level) Splash damage multi now also boosts normal damage.
10. Double bullet!!!1! (cost 10 level) Shoot 2 bullets at once.
11. TRIPLE BU11ET!1!!!1 (cost 50 level) Shoot 3 bullets at once.
12. Squarey (cost 20 level) Balls are now square shaped, making them slightly easier to shoot.