My name is Victor and I am a professional Sound Designer. I've been working in the gaming industry for over 5 years. Last year, our team started a new sound effect creation service http://diforb.com/
On our website, you can find a large amount of free sound effects – gunshots, explosions, and sounds of different animals. Also, we offer lots of other ones that are perfectly suitable for games of any genres. Our service can be helpful for indie game developers as it allows to select and adjust desired sound effects effortlessly.
We'd like to create a very popular and useful service that could help game developers create sound effects of a high quality. Diforb is working in beta mode, for now, so we'd be grateful for any bits of advice and feedback.
We are going to release some new sound libraries soon, so stay tuned!