This. Game. Is. Awesome!
Seriously. There isn't much to the game overall. You are a knight in armor on a horse with a lance, and you basically ride, jump, and joust your way through various levels while avoiding obstacles in your way (or smashing into/through them). There are a lot of game modes including an actual campaign, endless riding, and so on, plenty of upgrades and unlocks, quests, lots of little tweaks and skins, etc...
On the surface, this game seems overly simple, but it is really just pure, simple fun. The physics in the game provide lots of hilarious screenshots, especially the slow motion death scenes, which are abundant and cool looking (both yours and the deaths of your enemies).
This is definitely a game you can play over and over, for brief blasts (30 minutes) or for extended play periods.
This review probably doesn't do justice to how much fun this game really is, but I definitely recommend this one highly. You will appreciate it whimsy and its gameplay.
8 out 10 for good, pure, fast paced fun.