Hello Densetsu!

Nice drawing and good proportions! Did you do it on an actual black board?
Those tiny imperfections in the lines give the overall image a neat touch of details.

Looks a little bit like one of the two newer "Shadow Warrior" games. (But I have not played any of them, only judging by the Katana sword and the over the top creature...)

Kind regards,
foxgog

Thank you for guessing, and for the kind comment. It's just an inverted regular pencil sketch.

Shadow Warrior isn't nearly as obscure. In fact, it's probable that nobody participating in this thread has played the game. That's why I've put enough clues on the drawing to make it searchable.

Looks like this one is too difficult.

I'll draw another sketch shortly.

Ugh, I should have left a reminder for myself to post more clues. Sorry for letting this splendiferous thread slow down to a stop.


More clues attached:

I still don't know it, but I'm sure there's someone who can recognise it!

Looks like a math version of Anvil of Dawn.

Sorry for the off-topic, but is your avatar signature a reference to Myth?

Could you post another picture?

I know it's not a guess, just a side note that I don't really consider Anvil of Dawn anywhere near that level of obscure.

I figure I should. I'll sketch something that depicts the actual appearance of the game on screen more accurately, and do that shortly.

Not last time shortly. Sometime this weekend.

As promised*:

*
Also available as NFT art, at measly USD 499,99.

No hydras on GOG

On Steam, I found Hydra Slayer

EDIT: And seeing how it's a mathematical puzzle, it looks like the one

Very true.

Next one is all yours.

Next one.

Shadow Warrior

No.