A free demo version of X-Morph: Defense is now available for download directly from Steam (look for a "Download Demo" button on the right side of the store page):
http://store.steampowered.com/app/408410/XMorph_Defense/?snr=1_7_7_151_150_1
If you weren't sure if X-Morph: Defense was your type of game or if your machine can handle it, now you can check that out stress-free at no cost. This demo includes the first campaign mission and will give you a good feel for how the game plays.
The demo instantly converts to the full version of the game and save game progress carries over, so the transition is seamless if you decide to purchase.