What a one-trick pony.
The graphics, music, and the overall effort put into the game works alright, but in terms of the gameplay... its just sad.
The whole game tips on whether or not you can balance potions and gold income. On my first playthrough I was slowly starved out as I had no idea what the upgrades did, but on my second playthrough I went all out looting and got onto the fast-track of beating the game in 2 minutes, then won in about 15 minutes of staring at my screen.
The game really falls flat on this stat system, as 2 of the skills are counter-productive if taken at the wrong time.
Here's the gist of it:
A hero needs about 2 in looting to be able to supply themselves with potions.
When a hero hits 99, you lose them and their hero slot.
Now, skill increases the production speed of heroes while knowledge increases exp gain. EXP is only useful for finishing the game once you've already "beaten" it, and beating it is simply done by getting your hero to 2 looting and then up looting and health slowly while keeping potions up. In other words, your task in this game is to figure out that only 2 of the stats will help you win while the other 2 will help you win/lose faster depending on which direction you're going. Not fun; not challenging.
2 stars for effort.