well its good, heck I've seen all these 'my first model' threads and well this is the best one, I guess you learnt before you tried, sooooo....I'd say yeah its good for a game. The image is a little small to give any pointers, but I'll try to do my best, on the guard by the handle, you will see a few little abnormalities, i'll show you what I mean.
try to play with the vertices a bit to make it flat, if you could take a screenshot of a wireframe or isosparms of it so I can see if you have any problems in geometry.
Great sword though, with a little bit of texture that will look ever better, awesome for a first model