1. Just download the all-including 1.5Gb pack below, unzip it in your place of preference and run the included 'Total Annihilation Prime-portable.exe'. Keep 'check for updates' disabled and hit start. From there on simply register (or login if you already have a SpringRTS account) and you're good to go.
PS: We usually play on Wednesdays, 10h30 PM BRT/US Atlantic time - please notice we're in recess until January 13th 2021, but feel free to arrange any matches you feel like of course, our Discord channel (click on the button above) is perfect for that. Enjoy!
2. To play Single Player mode, make sure to 'kick' the default DAI opponent and add a 'Scavengers AI' bot. To play online, our official server is *TA Prime - Main Server*.