If you are craving angry birds, check out the castlestorm trial imo. Infinitely better game, but similar in ways and even more satisfying (bit more demanding too).
im going to download the trial tonight because of your incessant raving
Lol, thanks - let me know if you hate it, I'd be surprised though. Controls take some adjusting as it does ask you to do quite a bit, but once you've got the hang of it the game is great fun, for me anyway. Finished the whole campaign in 2 days, usually takes me about a year to finish a game usually. Last exceptions were guacamelee and hotline miami. It's not a must have though, like (I think) nampad said, but if you think it might be fun for you definitely download the trial! I jumped straight into the full game (after watching BM's video) but it should give a decent idea.
You don't even have to bother with the making your own castle if you don't want, they have ones you can choose, designed for the campaign but by the end you'll want to tweak things. Difficulty ramps up a little near the end (I played on normal and I'm planning to go back and get the rest of the stars on hard to prepare for multi). Did all the trophies except for all the campaign stars as well, although it didn't take much and there is no platinum.