The best replacement for suspense is thriller.

The best alternatives to suspense are rated as following:
★★★★★  thriller
★★★  mystery
★★  surprise
★  horror
★  suspense
★  horror movies
  foreshadowing
  mystery movies

Your alternative for suspense is not listed? Suggest!
Speaking about suspense, one probably shouldn't forget about suspension.

Other search terms related to suspense and their ratings are:
★★★★★ suspension
You have in mind a companion for suspense and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of suspense in all years. Click on graph for more.
suspense
thriller
mystery