Update: The Sonic game is still available on the Flash gaming website. Just head over to the website to start playing right away. You control the game with the keyboard. You move Sonic with the left and right cursor keys, use the space bar to jump and use Sonic’s spindash ability by holding down, pressing space and releasing down again.

You can also pause the game at any time by pressing the enter key.

Ultimate Flash Sonic features a password save option to save the game at any time. You can get or enter passwords in the main game menu. You can furthermore change the music and sound effect volume in the options.

The game may take some time to load before you can start playing it. You can select between the main sonic game and a special time trial mode.

If you select the main game, you can select to play as Sonic, Tails, Knuckles or Cream. Click on Start Game after you have made that selection to stat playing the first level of the game.

You can also use the Resize Game slider at the top to make the game screen larger or smaller. The game plays exactly like the original Sonic games on Sega’s 8-bit and 16-bit systems Sega Genesis and Sega Master System.

The main task is to reach the level exit. Collect golden coins to increase your score. You can also increase the score with a time bonus if you complete a stage in as little time as possible.

Sonic Ultimate is a great browser game that is true to the original 2D Sonic games.