Wood Games 3D is an athletics game set in an outdoor medieval world - you compete in events like the long jump, sprint, shooting, hurdles, and one or two events that combine two of those basic styles - there are 7 events in all. There's a browser version (needs the Java plug-in) and also an Android version There's an online high score table for each event, a daily world championship, achiements and challenges (although quite a few features are only for the Android version of the game). Both the browser and Android versions are free.
I played the browser version for a while and it's quite fun, a lot like some of the old joystick-busting athletics games for the 8-bit and 16-bit machines, only this time it's your mouse that's going to get wrecked. The events are quite nicely varied, the controls work okay, and I found that I was much better at some events than others. The controls are simple but sometimes a little fiddly until you get used to them. The graphics and music were good, though I did often get the feeling the the perspective of your character was wrong - he seemed to be lying face forwards on the floor rather than on his feet when he ran!
If you like retro style athletics games, and especially if you're very competitive and likely to stick at a game for a while until you get on the high score table, Wood Games 3D is a good little time-waster.