Of course, I bought this for my son, but I hoped I could figure it out. I have always liked the Sonic collection and wanted to continue to be a kid with my son. I like the graphics and the sound, and the improvements made to the old plateaus and tricks, just wish I had more time to access my kid inside. My son loves this and has beaten the game before I got past the first set of acts. sigh...
Sonic 4: Episode 2, vastly improves on Episode 1 in every department, and I'd dare say it is the best 2-D Sonic game since Sonic the Hedgehog 3 was released 19 years ago. The game's physics have returned to Genesis-era goodness, and the artwork has a lot of shading, giving Sonic and the stages a strong illusion of depth. Most importantly, the stages are a blast. The level designs (including a flooded castle, an abandoned roller coaster and a desert oil field) and bosses are unique instead of looking like just rehashes of the Genesis games, and their layouts naturally mesh with the art design. The music is also totally original and quite fun. The game requires frequent use of Sonic's usually useless ally, Tails, as they must join forces to overcome obstacles. Tails can carry Sonic in the air for short distances with his helicopter-tail, and the duo can turn into a giant spinball which is needed to break through tough walls. Sonic 4 has the best boss battles in the series by far; I'd dare call the two battles with Metal Sonic "epic", and the final two stages had my heart racing.
If you're an old-school Sonic fan like me, this game will likely live up to or surpass your expectations. In my opinion, it is far superior to the recently re-released Sonic CD and Sonic & Knuckles, both of which have been considered follow-ups to Sonic 3. If you're a newer fan of the 3D-era Sonic games, then this game will feel very different in that there is no dialogue or real story: it's "Hedgehog and Fox v.s. Mad Scientist and Robot Hedgehog", which is just fine with me. Either way, with 12 normal levels, 7 bonus stages, and 6 very elaborate boss fights, the game is a steal for the price. And, if you bought Episode 1 on the same device, you get Episode Metal, which allows you to play as Metal Sonic through 4 new levels based on the first episode's designs! Give it a spin!
I personally get dizzy when I try to play this game but my grandchildren absolutely love it. They trade the Kindle Fire back and forth for hours at a time. The only problem I have is that I have one Kindle Fire and three children who want to play it.