http://terasology.mmo.to/deb/

Add this repository to /etc/apt/sources.list as:
deb http://terasology.mmo.to/deb/ ./
Import verification key with:
wget -q http://terasology.mmo.to/public.gpg -O- | sudo apt-key add -
Icon  Name                    Last modified      Size  Description
[PARENTDIR] Parent Directory - [   ] terasology_1.5.0_all..> 2017-09-03 06:59 109M [   ] terasology_1.4.0_all..> 2017-08-06 21:01 102M [   ] terasology-launcher_..> 2017-04-18 06:52 5.3M [   ] Release.gpg 2019-03-06 05:38 488 [   ] Release 2019-03-06 05:38 1.2K [   ] Packages.bz2 2019-03-06 05:38 1.0K [   ] Packages 2019-03-06 05:38 2.0K