Another from the Ocean stable, the Ninja Collection doesn't set a place at its table for Mr Variety. All three of the featured games are reasonable but not brilliant beat-'em-ups.
Double Dragon
Double Dragon is the oldest and wrinkliest of the Double Dragon series of ninja games. Double Dragon 2 is riding high in the budgie charts even as we speak. Double Dragon 3 was reviewed last month. And if you've played one, you've played them all.
Dragon Ninja
Dragon Ninja has also enjoyed a large sortie into the budget charts recently (meaning that a lot of you have probably already got it). It's a pretty good game, with different platforms, passing traffic and stuff like that to liven it up.