I just played it and really am enjoying this, It feels like the Sonic I played when I was a kid, something I couldn’t get from the 3d versions over the years. I will give a brief copy pasta from steams website and then show a short video I made of the first stage, please bear in mind I havent played a sonic game in years *blush*.
The sequel fans have waited 16 years for is finally here – Sonic the Hedgehog 4 Episode I! Featuring enhanced gameplay elements, including the classic Sonic Spin Dash, and the versatile Homing Attack, Sonic the Hedgehog 4 Episode I picks up right where Sonic and Knuckles™ left off. Dr. Eggman’s back, and in an effort to finally rid himself of Sonic, he revisits – and improves – the very best of his creations. Get ready for the next chapter in an all new epic 2D saga built for old and new fans alike.
Please share your love for Sonic below 
One of the main reasons I love sonic games is because they remind me of my childhood mega drive days.
kids these day just have a floating hand with a gun in it as their favourite video game character.