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Kill Fish, straight from Meridian4, is now available on GOG with a -40% launch discount! The offer ends on March 14, 2 PM UTC.

Kill Fish is a side scrolling 2D puzzle platformer where you get to experience a surreal and captivating world. It’ll transport you to a mysterious and oppressive environment, full of secrets and surprises – as you delve into the psychedelic storyline, you’ll take up the role of a man trying to escape his past. You’ll soon realize though that he just keeps making the same mistakes repeatedly, while tiredness and struggle to uncover the secrets take over. It’s a meticulously crafted game with incredible hand-drawn graphics that’ll immerse you deeply in an eerie and surreal atmosphere – the quirky enemy designs might scare you and touch you, resulting in an unforgettable experience.

Now on GOG!
If you told me this was an early 2000s freeware from the popular freeware websites of that time, I would have no reason to doubt you :D
I wouldn't exactly call what looks like a 2000's flash game "incredible hand drawn graphics".

Might want to turn down the hyperbole a bit there GOG.