Edit; Ads work maybe 15% of the time, which is INCREDIBLY frustrating as ads are 99% of how you can progress at a reasonable rate. I've been stuck at the same area for close to 3 months now because ads stopped working and progression is so slow without the boosts. Honestly love this game. While there 'isn't much to do', this type of phone game has a charm a lot have lost. I hope while the game continues to grow and change, it doesn't lose that simplicity.

The game seems to scale with you, so increasing stats whenever you can actually makes gameplay harder on yourself. Levels that I breezed through over 40 damage upgrades ago are now just manageable, somehow. If you don't buy the packs, you're pretty much screwed since meaningful upgrades are going to require resources you won't have on hand and will have an increasingly hard time getting. This feels like a graphically prettier, but higher paywall version of Legend Slime.

The ads in the game are so frustratingly annoying. There are ads for everything, including increasing the level's speed to 3x. This would be fine if the ads weren't so extremely sensitive that you are almost always guaranteed to accidentally click on the ad, instead of closing it out. And if you do accidentally click on the ad and get taken out of the app, it will restart entirely and you do not receive any of the level goodies, which is more irritating when you are halfway through the level.