This game is very fun but can be completed it a few hours. The paper mache drill turning out to be the best drill in the game is funny as it seems like a troll at first. However there are a few problems. 1. The tier 3 booster is far better than even the teir 6. I have unlocked everything yet i am still using teir 3 boosters because all of the others are worse than it. 2. There is a bug that allows the player to get 3 engines at almost the start of the game. You can get the teir 1 engines for free meaning you can fill up all of the empty space in the hull with free tier one engines leading to a high horsepower for an early game player. 3. Please make some better manuverability for very fast drills as you cant manuver with anything past the green drill. 4. This isnt a problem but rather a suggestion, i would like more planets to visit and mine with each one being progressively harder, with maybe their own upgrades and drills. Overall the game is fun and enjoyable.

Good progression system games are hard to come by, this one is decent (some performance issues when you start to go fast). But the worst thing is that it is too easy/short, and there's nothing to do when you 'win', I beat it in one sitting. If anyone needs tips here are spoilers: the final hull upgrade to 90 degrees is your top priority, once you get to the red layer you can get billions easily. Too bad that 1 billion can buy every upgrade and is pointless to get money after that, though. Takes a lot of fun out of it. Potential here and with higher goals could be 5 stars.

The review before mine I agree with but I think that is there is another update the planet idea from epic I would like a lot of the planets to be from our solar system and the universe and the rest of the planets can be not a real planet at least as far as we know of and I would like a drill that is better than the paper new engines new boosters and new better bigger grid size hull like if possible maybe like 50 x 50 and better batteries that with one gives like 1 million energy and be able to have multiple drills on the drill and I would make you mine faster

It’s good but I would add more improvements and change the name to overdrill. And, you need to add more stuff to do, if so, this could be a contender for one of the best mobile games on the App Store.