Challenge your ability to spell words and enjoy this fun game.
Final Fantasy Sonic X6 is the 6th episode of this fantastic game/movie.
Another adventure with Sonic, the fastest character in the Sega world.
Sonic on Clouds is a simple platform game in flash.
Ultimate Sonic is an action game based in the famous Sega Genesis saga.
Sonic Moto will teach you the real complications of riding a motorcycle.
Mike Burgess and Dave Mongeni
Neo-Sonic Godspeed - a fan made game that fitures Sonic.
Open Sonic is an open-source game based on the "Sonic the Hedgehog" universe.
Keen Software House
Miner Wars is a 6DOF underground and space shooter game.
Never get lost while spelunking deep underground in the game Minecraft.
Power of Two
“Dwarfs” is an arcade/strategy game set deep underground.
Big Fish Games, Inc
Escape an underground vault of clockwork wonders with this adventurous game!
This game is a sequel to “Richie the Gnome: the Underground Treasures”.
Knytt Underground is a 2D platform game featuring a quirky story.
An epic battle game where you take on the role of a new underground gladiator.
Iron Heart 2: Underground Army is a strategy, tower defense game.