This is my current game.
Plan on puting a good 1year into it.
Maybe more.

Its based on Half-Life 2.
Its a side scroller.
You go around kill headcrabs and other NPCs from Half-Life 2.

Get guns and more.
Currently I'm building up storylines for people to do.
Figuring out what kind of lvls to make.
And other xtra features like for example i could add a Magic spells feature =P or something.

If you want to help out go ahead and PM me or comment me on what you can help with.