Sonic & Knuckles: Newtrogic Panic - SAGE 2019
You can download this Sonic fan game from here:
https://www.sonicfangameshq.com/forums/showcase/sonic-knuckles-newtrogic-panic.311/
Weird name for a Sonic fan game aside, I like this one. It's a rather neat concept too. Basically the game takes place after Knuckles Chaotix bad ending.
The visuals are really good, controls feel very responsive (at least compared to previous 2D fan games featured earlier), some neat level gimmicks and a good soundtrack (I need to find the songs).
Some complaints, level design can be a bit iffy at times mainly, with some cheap hazards but nothing too annoying.
All in all, I recommend this one. :)
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Knuckles' Chaotix Statistics For Marius Urucu
Marius Urucu presently has 15,119 views for Knuckles' Chaotix across 1 video, and less than an hour worth of Knuckles' Chaotix videos were uploaded to his channel. This is less than 0.14% of the total video content that Marius Urucu has uploaded to YouTube.