This game plays as little more than a proof of concept with some nice pixel art.
The "gameplay" is a mix of a turn-based RPG and an idle game. You have a 10-second time limit on your turn to attack, cast magic (which includes a healing spell and four different damage spells) or skip your turn. The reason you have a time limit is because you automatically generate gold per second (the idle part of the game). This gold is spent on upgrading your damage, HP, MP, or gold gain. Of course, this means that if you want to get as far as possible, you want to stall out every battle as long as possible to maximize your gold gain.
But none of that really matters, because there's no point to playing the game. If you win a battle, you fight a new random monster with progressively larger stats. If you lose a battle, you get a random, censored, vaguely-animated sex scene that lasts about 5 seconds. There's quite literally nothing else to it.
"Nothing else to it" applies to the program itself, too. There's no menu, no volume or video settings, no pausing, no progress saving, no gallery... It's just the game and nothing else. And considering this is on the fringe of what could even be considered a game in the first place, there's basically nothing here.
Just don't bother. Even if you just want something to waste some time with, you're better off looking elsewhere.