Hollow Knight is 2D side-scrolling game which makes you flame on it and love it
Gameplay is made in the best traditions of metroidvania - styled games

First things first i wanna say about the world
It's huge, it's very huge and beautiful.You can feel the atmosphere because of music and dungeons that filled with cockroachs and the other insects.
You have to discovery a depths of the Hollownest (The biggest kingdom)
Upgrading yourself by finding charms. Few of the upgrades are being bought through the various merchats that are scattered around in different locations for Geo (Geo's the value of Hallownest)
Thanks to the amount of different locations, The Knight is able to use stagways as some sort fast-travel system between them.
Throughout the world the Knight will encounter various NPCs. By talking to them he can learn about lore and secrets of Kingdom.
As long as game progresses you will get spells that make your Knight more powerfull.
Protagonist uses Nail as his weapon in Hollownest. During the game you will be abble to upgrade it.
Also the Protagonist uses SOULS for healing and using spells. To get SOULS, The Knight needs to damage enemies.
To accompany the incredible level design and art of it, there are a lot different bosses, to which you must learn the patterns first and then defeat them.
http://v1.steam.hlxgame.cc/sharedfiles/filedetails/?id=1228608847