Yfrit is a brazilian Indie Game Development company formed by two gaming loving geeks!
In order to improve the sense of progression in the Story Mode of Dual Snake, we decided to split the levels into Main and Side levels. The Main levels are the ones important in the story, while the Side ones are harder challenging levels.
This should allow more players to experience the story, while also allowing them to play harder levels if they desire. It also makes it so that multiple levels are accessible at once, so players can always try other levels if they are stuck in one.
There is also a brand new achievement for completing all Side levels.
A developer and publisher of puzzle games including Dual Snake.