I published a free game last year called In Between. It took me a while to make and I am proud of it, but, it completely flopped on launch, having 5 total downloads currently. This saddens me quite a bit as I really wanted people to play it and share their experiences with me but the game seems to not even be indexed in it's own tags anymore. So I've been trying ever since to "revive" it, i.e., gather new attention around it in hopes of it gathering attraction on its own again.

Don't get me wrong, I know that there is a lot of luck involved with this and not every game you make will explode just because you poured your heart into it, so I'm talking about direct and useful ways to you've managed to bring some new eyes to your games.

I remember seeing someone talking about making your game paid and then giving it a 100% discount on sales so it gets boosts. I don't really like this idea as it feel slimy and it just doesn't sit well with me.

Please share your stories so me and other people may, hopefully, begin sharing their games with the world again!

Bump because I would like an answer too

the game seems to not even be indexed in it's own tags anymore

The game is currently indexed. But you have about the most generic user name and game name.

Game looks like you could make a web version out of it. Might get more plays this way, but you still would have people see the game for that.

I agree with the comment above. Having a generic (or simply put lame name) for a game, and a thumbnail that shows the name, is not the best approach. Ask yourself, what do you understand or imagine if you read and see a thumbnail like yours?
Another agree on the web version, demo at least in case the full game is paid. That will expand the exposure a bit, but not vast unless my last point is achieved. 
The game needs to be good and fun to play, so it would compete with the other thousands of games which are released at Itchio per month.

Still, if this is your first game, or solo game, from media assets the game looks decent. Good luck with the revival, although it might be really harsh to pull that out.

Marketing budgets of AAA games are massive and for a good reason: because it works. Games that cost 660 million dollars to develop can have 550 million dollar marketing budgets. Probably about 25% of your time should be for marketing your game if you are looking for a large audience.

Doing a sort of Restyle... guys I didn't sell anything before, but with the Restyle I had absurd sales, more than good and I'm happy... on the 17th I'll get a new video card,It's gonna be awesome, nothing's gonna stop me....I should have done it sooner but I've always held myself back...you gotta believe in what you do, everything's gonna be okay...