[PC] [≈2010] Looking for a reactivity game!

[Second Game] I remember even less of this one, it was a game where you only had to use the space bar: it was a game of reactivity. At the top of the screen had the timer, at the end of which you needed to Press the space bar, and 2 health bars one yours and the other of the enemy. I remember which was 2D Flash Game and mostly with "red" and "dark" colored backgrounds. I think you could choose between 2 modes, one where you faced characters controlled by AI (a sort of story mode, with progressive difficulty), and the other instead It was a sort of "1vs1" a local multiplayer, since I remember playing it with my brother and getting pissed off every time he won. It was a sort of "West Battle". And perhaps the most important detail was that it had music that was incredibly anxiety-inducing, which I remember from hearing it some time ago in "Kill Bill": Siren

Thanks again!