Hi I wan'ted to play on 1.12.2 mod, and it's called Buildcraft, but when I saw that there's only 1.7.10 version i've got a little mad 
Here's a new version: https://www.mod-buildcraft.com/buildcraft-79914.html < Please update it, i would be greatfull (or make a combination of Buildcraft and IndustrialCraft 2) 
Posts by Lukas.199
The Aternos forums are now deprecated
Learn more about this change here.
For help regarding Aternos, we recommend you to visit our support center.