The listing, Stellar 2D - Steam Key has ended.
Stellar 2D is a retro style space arcade game, it's a 2D game in a 3D world. With an addictive, fast paced, casual game-play style.
Here is a steam copy for Stellar 2D, for more informations , please check :
http://store.steampowered.com/app/391070/
All you need to do after receiving the key is :
1- Open your steam and sign-in.
2- Go to the games menu in the top of the screen you will find "Activate a steam product".
3- Follow the instructions then enter the key to activate the game.
4- Install the game.
5- Enjoy it.
Please note that if you use the key and activate the game through steam, you can't ask for a refund.