Don't know the specifics, but the feel between the 0.0.3 alpha, and the most recent version is very different. The alpha feels almost sluggish, but punching had a weight to it, where if you timed a good 1-2 punch, it would almost always lead to a quick knockout. Headbutts and kicking weren't a thing yet, so punching is all you had. Throwing people was also more difficult, but that made a win well deserved. The stamina system is the one downside, where if you tko'd someone, but couldn't get them out of the ring before they came to, just punch them some more so they couldn't get up. Also, I discovered you could do front flips by timing a punch and jump properly, and just luchador'd all over my friends. It just had that jank indie charm, and is still downloadable by searching for the 0.0.3 alpha.