What are some good, but low budget science fiction/ or action movies that are like riddick?

On a side note, i have seen the first two riddick movies (not including the animated ones), but have not seen the newest riddick

How about the Blade movies? There's a few of them: Blade 1, Blade 2, Blade 3 (I think), and Blade Trinity. I've only seen the first one so I don't know how the others will go but it's pretty good. I still like the first 2 Riddick movies better though. Haven't seen the new one either.