The best replacement for ouya is gamestick.

The best alternatives to ouya are rated as following:
★★★★★  gamestick
★★★★  raspberry pi
★★★★  mx2
★★  mojo
★★  nvidia shield
★★  firetv
★★  amazon fire tv
★  pivos
★  android mini pc
★  cubox
★  gbox midnight mx2
  minix x7
  onlive
  fire tv
  box mx2

Your alternative for ouya is not listed? Suggest!
Speaking about ouya, one probably shouldn't forget about ps3 controller.

Other search terms related to ouya and their ratings are:
★★★★★ ps3 controller
★★★★★ xbox 360 controller
You have in mind a companion for ouya and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ouya in all years. Click on graph for more.
ouya
gamestick
raspberry pi