I have played both RSG and Ikaruga, not my cup of tea, both felt overhyped and overpriced for their respective systems (though in RSG's case, it's far worse). I can safely say there are only two Treasure titles I have any liking for, Gunstar Heroes, and Dynamite Headdy, Alien Soldier is fair. RSG's pacing felt a bit slow to me, and Ikaruga felt more like a puzzler than a shmup, I like puzzles, just didn't like Ikaruga.