Nice gesture SpoonFULL. I've got this on Steam too and can recommend it, however...
The port of Double Dragon II is extremely challenging even on the normal difficulty.
I haven't been able to finish it or D3 as yet. It'd be cool to try them in multi-player, as this is something I've not been able to really test yet.
Pardon my semi-hijack SpoonFULL but if anyone would be interested in giving it a shot, feel free to give me a hoy via PM.
Got this from the GOG sale as well, though I haven't installed it yet.
Like jdr, I played the bejesus out of Double Dragon 1 in the arcades as a kid, though I was never good enough (or I didn't have enough quarters) to actually beat it