Rock of Ages

(XBLA)

Hitting stuff with a giant boulder is, of course, lots of fun; but between rolls you have to lay down Rampart-esque defenses in front of your own castle because there's an enemy boulder on a completely separate track that's smashing your stuff.

And that's the problem. You're defending against the enemy rock, but only during your down-time. When you're actually rolling (on the offensive) then you have to watch the enemy boulder through a special window to see how your defenses hold up, but you're not going to do that because you're too busy trying to keep your rock from flying off a cliff.

But in the end the defend-the-base elements are negligible because the game is super pretty and you get to hit stuff with a giant boulder.

(If you think this game is weird then you should see the last game that ACE made. Holy shit.)