Fans have been waiting over 15 years for a worthy replacement for the original Sonic 4. The game delivers as promised with added features that weren't present in the original game. Additionally, players confront Dr. Eggman and other villains in the game. The classic mode is played on a single platform; it's focused on offering two types of gameplay. The first is a racing game where the player navigates through 4 themed zones using the phone's accelerometer. The other mode is smartphone-exclusive and features Sonic in classic platforming environments. Avoid clashing with monsters during your quest. You can also eliminate a monster by jumping on top of it and stabbing it. If a player collects 50 or more coins, they can access a special level. Sonic the Hedgehog rolls into a ball to bounce off walls and through mazes. In order to complete each level, the player must help Sonic collect rings and complete time bonuses. They must also help him navigate through the maze while he rotates completely around. At the end of the super level, players receive one of the seven Chaos emeralds. Collecting all seven allows the player to unlock a Super Sonic character with invincible skin who constantly speeds up. New features and exciting new storylines are added in Episode I of Sonic the Hedgehog 4 ™. The original plotline is maintained, while 4 unique zones with a total of 7 special levels tell the story of the race. Additionally, new homing attacks are included in the game. The classic boss fight with many upgrades from the original game comes back in this game. Doing so unlocks a special stage that lets you collect 7 Chaos and unlock Super Sonic. In addition, Dr. Eggman has new mechanics and becomes more frenzied as his health decreases. The first episode of Sonic The Hedgehog’s 4 ™ series maintains the same core values of the game as previous electronic systems. The game offers identical gameplay, graphics and background music to previous systems. You still play as Sonic, who rescues animals and takes down the evil Dr. Eggman. In this version of Sonic The Hedgehog, the player's mission is to collect all the coins they find on the way. Doing so frees the animals trapped by Dr. Eggman, who has also equipped them with large armor and weaponry. Once the player reaches Eggman's final Boss, they must face a difficult foe wearing heavy armor and armed with oversized weapons. Additionally, this version of the game has better graphics and a more engaging gameplay. In order to navigate difficult terrain with ease, you’ll need a combination of running and jumping. Additionally, spring pads, acceleration pads and acceleration should be utilized when crossing steep ramps, roll ramps or bottomless holes. Passing the challenge will be difficult, but Sonic can do it with ease if you help him out. Episode I of Sonic 4 ™ brings joy to the player. You play as Sonic in a ball and smash through barriers with powerful swing attacks. As a hedgehog, you can also jump on enemies and destroy them from the inside. Additionally, players can use this episode's plot to defeat enemies by jumping on them from the outside. When confronted by an enemy, collect the rings they leave behind— they provide power for Sonic's defense. Bosses are encountered after passing through the three phases of the game: deserts, factories and jungles. Each time Sonic is hit by an enemy or bomb, his rings will drop. If this happens during a checkpoint in any of these regions, the rings would drop even more. This is because collecting rings is how Sonic rescues the captured characters. The original 2D platformer from Sega is very similar to Sonic 4 ™ Episode I. Both the game and previous versions are focused on fun, nostalgic gameplay. This game still has the same mechanics as the others. The mobile version of the game adds many useful features beyond the original. These include modifications to battles with classic bosses, such as Dr. Eggman.

Both the previous video game version and Episode I of the Sonic 4™ series use the same gameplay mechanics. Both games provide accurate controls. There are two separate action and navigation buttons located at the corner of the display. Through these buttons, the player activates commands to control the character's actions such as moving forward or backward, rolling and changing direction. The player interfaces with the control button on the left side of the display to navigate Sonic to run forward or backward. Additionally, they interact with the control button on the right side of the display to jump up.

Episode I of Sonic 4™ is full of vibrant colors and beautiful graphics. On devices with large screens, the graphics are displayed very nicely. This 2D game includes snowy hills, factories, deserts and ruined terrain. When playing the game, players don't feel left out thanks to the effects' vivid and beautiful coloring. Every time they look around, they're inspired. The Bomb effect when Sonic jumps on enemies and light when he transforms give an extra kick to the action. The game’s high-quality graphics make the overall experience very pleasing to the eyes. The background music and sound effects remain unchanged from the original, making this a superior version of the game for players to enjoy. Additional sound effects are added to enhance the overall experience. If you enjoy the speedy hedgehog Sonic, try out the game “Sonic Dash.” In this free game, you control Sonic as he runs through an endless loop. You can dash, jump and spin to navigate beautifully rendered 3D environments. Navigate challenging obstacles to obtain unlockables and compete against friends for high scores.

A 2D adventure game reminiscent of the Sega Genesis versions of Sonic the Hedgehog is called Sonic 4™ Episode I. It's a great game for adventure lovers that was designed based on the cartoon Sonic. In addition to racing, you collect rings and hurt enemies while moving through the game's levels. Special levels let you find Emeralds of Chaos and compete with other players on a leaderboard. As you can see, this game comes with a great 2D art style. It's easy on the eyes and appealing to most people. Plus, it has an action-adventure plot that fans of those genres should enjoy. ———

Sonic 4™ Episode I Mod game is a arcade game with all levels unlosked. In this mod game, you can free to paly all the level on the game. With this mod, this game will be easy for you. Enjoy the game!

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2) Install and Enjoy.

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Featuring enhanced gameplay elements, including the classic Sonic Spin Dash, and the versatile Homing Attack, Sonic 4 picks up right where Sonic and Knuckles™ left off.
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2 EXCLUSIVE LEVELS!!!
Two exclusive levels built specifically for smartphones using the accelerometer. NEW MOVES
All of Sonic's classic moves are available, including the newer Homing Attack which will add a new level of control and excitement.CLASSIC SONIC STAGES
Race through 4 unique zones containing 4 acts each as well as 7 special stages. SPECIAL STAGES RETURN
A staple of the Genesis-era games, the special stages return allowing fans to collect the 7 Chaos Emeralds and unlock Super Sonic. REVAMPED CLASSIC BOSS BATTLES
Dr. Eggman returns with new and improved mechas and will go berserk when he accumulates damage.¬¬
GamePro - “…this looks and feels like a genuine Sonic game, deserving of the "4" attached to its title.”
IGN – “After an afternoon in its presence it's become seared in our conscience just like the classic levels of the early Sonics – and surely that's reason enough to have faith in Sonic the Hedgehog 4.”Be the first to know! Get inside SEGA info on great deals, plus the latest game updates, tips & more…FOLLOW US: twitter.com/sega
LIKE US: facebook.com/sega
VISIT US: http://blogs.sega.com/Play SONIC 4™ EPISODE I on your big screen TV with MHL. Visit www.meetmhl.com for more information.- - - - -
Privacy Policy: http://www.sega.com/mprivacy
Terms of Use: http://www.sega.com/termsSEGA, the SEGA logo, SONIC THE HEDGEHOG and SONIC 4 EPISODE I are either registered trade marks or trade marks of SEGA Holdings Co., Ltd. or its affiliates. All rights reserved.

In regards to gameplay, the parable states that patience is a virtue.
Control
Included with a game are graphics and sound.
Conclusion

// Option A //

To download Sonic 4™ Episode I mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download Sonic 4™ Episode I mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download Sonic 4™ Episode I from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search Sonic 4™ Episode I in HappyMod App.