The best replacement for trilogy is trillian.

The best alternatives to trilogy are rated as following:
★★★★★  trillian
★★★  cyberknife
★★  tutu
★★  ltv
★★  triamp
★★  pai rosehip oil
★  a'kin rosehip oil
★  prequel trilogy
★  antipodes
★  paragon
★  kiss land
★  saga
★  kosmea rosehip oil
★  true beam
★  batman trilogy
★  autococker
★  sukin rosehip oil
  torino pad
  majestic
  renew rosehip oil
  hitman absolution
  prequel
  sukin
  trilogy
  superbolt

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

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



Google Trends

Scale is based on the average worldwide traffic of trilogy in all years. Click on graph for more.
trilogy
trillian
cyberknife