Natural Selection 2

Everything in the nature is perfect. Birds are flying, fish are swimming, and so on. In this awesome free online game “Natural Selection 2” your task here is to kill all flies. Are you already fascinated? But, stop! There are also some obstacles and it is not so easy as you think now!
Your main equipment is your web. In normal life we all do not like almost all spiders, but in this amazing physics game for free our little spider is in the center of all events! So, your main aim here is to help the little hero, who is really hungry and he wanna to eat all flies around him! You can be sure that if you play this game once, you will play it again and again. Use your web to creep on walls and reach your aim as soon as possible. That is why, if you have really hard worked for the whole day, or you just have a bad mood, this is the best way to spend some time with this insect and help him in such a hard way. Cause you have to know that sometimes it is not so easy to alive in such a cruel nature world. We know that you are not indifferent and able to help him.
There are some obstacles here, like the terrible bees! Some levels are quite difficult, cause you have to catch all flies, avoiding bees! They are waiting for you to sting till the death! In this exciting free online game you can also get a lot of medals, like 'spider' that you can get if you pass eight levels, 'fly' for four levels, pass sixteen levels and have a chance to get the medal 'bee' and many others. It is really cool, yeah? If you do not believe us, the only one advice we can give is to check it yourself and you will be sure that this game deserves all these words! We know that you are the only one, who can do it without putting a lot of efforts! Play also sport games.
As you have already understood, your main task in this online game is not to break this natural link, where the beast eats others animals, spiders eat flies, birds like to eat insects. It is normal, that is why do not waste your precious time and help the spider to reach his aim, but, of course, avoiding the main impediment here! Use the walls and find the sacrifice in the awesome puzzle game for free.
Source.