Hi, I have question. Can I use web serwer to hosting my game. If not when I can find free server to computer game?
Web servers can be used to host WebGL builds of your game for play within the browser, or of course can be used to download platform specific builds.
Joe's answer is correct, of course, if you're talking about hosting the game for download. If you mean hosting games in a client-server sort of way, as in multiplayer games, it's a bit more complicated than that. The short answer of that question is "Yes, but if you're not a seasoned developer, stay far, far away, and stick with platform APIs or P2P networking instead."
When you say platform APIs, do you mean multiplayer on the same computer? P2P would mean a 2 player game?
That would be using Apple's GameKit API, or Google Play Games. These APIs handle a lot of the networking stuff for you. Steam has something like it as well, I imagine, but that's outside of my expertise. Peer-to-peer (P2P) would mean connecting two or more clients together where one of them acts as the host. Again, this is something I don't have a lot of experience with, but from what I understand, it's at least easier than running your own servers.