The best replacement for terran is protoss.

The best alternatives to terran are rated as following:
★★★★★  protoss
★★★★★  zerg
★★★★  terran
★★★  protoss strategy
★★  zerg strategy
★★  zerg starcraft 2
★  terran strategy
★  zerg sc2
★  zerg strategies
★  protoss build
★  protoss sc2
★  zerg build
★  void rays
★  vanu
★  mutalisk
★  terran sc2
★  protoss starcraft 2
  swarm host
  protoss hots
  zerg rush
  protos
  roaches
  roach rush
  protoss strategies
  earthling
  terran starcraft 2
  toss
  protoss air
  archon
  argon
  banelings
  protoss tips
  protoss build order
  carriers
  terran replays
  zerg build order
  terran strategies
  baneling
  ultralisk
  protross

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

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



Google Trends

Scale is based on the average worldwide traffic of terran in all years. Click on graph for more.
terran
protoss
zerg