You must use Ultimate Sonic cheats, passwords and codes if you want to enjoy the game even more. The good thing is that these cheat codes unlock cool features.

Ultimate Flash Sonic is one of the first Sonic games online and it’s also one of the best. It was released in 2004 and still holds its own against online gaming today.

Other free Sonic games have been developed that are good, but this game captures the essence of the old 2D games, something that some of the other games lack.

The cheats for ultimate flash sonic are good. Unlock more characters, friends and enemies of our blue hero. You also get a code where you can make Tails follow you, like in the old Megadrive games. But Tails doesn’t attack your enemies, this time he is just a follower.

So relive the old Sonic feeling by using the following passwords.

You must enter these cheats by selecting the password in the main menu.

Unlock all:
This is the best cheat in the whole game, this code basically allows you to unlock all the secrets.
Enter 595313131313131 as the code.
This unlocks Sonic Run 2, Tails follows behind, Big Cheese, Moon Gravity and Jukebox.

Unlock Sonic-Run 2 and Tails only:
Enter 211313101010101 as password

More password codes:
Sonic 115310101010101
Knuckles 115010131010101
Tails 115013101010101
Cream 211010131310101

If you’re wondering how you can get the codes on your own, you get them by completing Act 1 and Act 2.

Try these cheats and enjoy Ultimate Sonic, one of the best free Sonic games online.