The best replacement for roblox is minecraft.

The best alternatives to roblox are rated as following:
★★★★★  minecraft
★★★★  blockland
★★★  club penguin
★★  lego
★  toontown
★  gmod
★  terraria
★  lego universe
  minecraft youtube
  minecraft epic rap battle
  maplestory
  minecraft better
  roblox

Your alternative for roblox is not listed? Suggest!
Speaking about roblox, one probably shouldn't forget about cheat engine.

Other search terms related to roblox and their ratings are:
★★★★★ cheat engine
halo 3
You have in mind a companion for roblox and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of roblox in all years. Click on graph for more.
roblox
minecraft
blockland