Investing in the second drill actively caused my income to slow down, and by a lot! I just bought 2 transporters, and then all 6 of my employees kept focusing on going out to the farther drill, which was barely producing ore still, rather than mining the plentifully available gold from the first drill. I can see that the second ore gives more gold per time mined, so it speeds up the mining part of the process for the little guys...but they made money MUCH faster by just constantly mining the first drill, rather than going over to the still undeveloped drill to mine a little bit, then all getting in the transporter to go mine gold from the first drill for a second, then getting back in the transporter because the farther away mine produced a little bit more ore...overall, my income dropped MASSIVELY.

And I didn't see a way to do anything about this! No ability to un-buy upgrades, or disable transporters, or change employee priorities...nope, I tried to invest in the new thing, and was punished by my income tanking as a result! Which meant I couldn't invest hardly at all anymore, leaving me destitute and just sitting there...waiting for the cash to buy upgrades which are ALREADY too expensive for too little reward, the balancing already isn't great on that!

So I just...gave up on it there, after 12 minutes. This just fundamentally breaches the contract with the player by punishing investment, irreversibly, with no warning. Definitely need to fix that if you continue development on this game! Buying an upgrade should never make my income go down. ...Unless there's a way to undo it I suppose, but even then, it'd still feel bad to have that trap there in the first place, why would you ever WANT there to be an upgrade you can buy that just punishes you without telling you! We invest because we want the number to go UP, not down!

But I assume it was just an unintentional oversight here...still, could use some more playtesting and work, so giving the current version (as of this review) 2/5 stars. I wanted to like it, there's the potential to like it if it's balanced better, but I didn't really enjoy my experience here. I did get a small amount of dopamine from the start of the game, there was a VERY brief window where it felt like my ability to buy upgrades sped up a little bit, so I won't give the game a 1/5...but it is a VERY insubstantial 2/5 right now, I'm basically giving that rating to a tech demo rather than something you'll get much substance out of, as I got less than 5 minutes of fun out of it overall, I'd say, much of my 12 minutes was spent waiting.