How to Host an All The Mods - Gravitas² Server
All The Mods - Gravitas² is a gravity-themed skyblock variant in the ATM family on Forge 1.20.1, starting players on a floating island in a void world where gravity itself is a resource to manage. Unlike standard ATM kitchen-sinks or other variants like ATM Sky and ATM Volcano Block, Gravitas² builds its entire progression around gravitational fields, balanced platforms, and vertical-momentum automation, so hosting it right means getting the first boot and the RAM floor correct before anyone logs in.
Start the server with at least 8 GB of RAM allocated. That floor comes straight from the pack's own recommendation for a Forge 1.20.1 build this size — going lower risks long tick times once the floating-island base starts filling up with gravity-manipulating machines.
Import the All The Mods - Gravitas² modpack directly through a clean modpack installer rather than guessing at a config from a client export. The server side needs the exact same Forge version and mod list as the client, or the void-world generation and gravity mechanics will desync between players.
Watch the logs through the first full boot. Gravitas² generates a void world with a single floating starter island, so confirm the dimension loads cleanly and that any gravity-field or platform-balancing mods finish their setup routines without throwing errors before moving on.
Only invite players once that first boot has completed cleanly end to end. A server that crashes mid-load on a skyblock-style void world can corrupt the starter island, and there is no ground to fall back to.
Take a backup before importing an existing world, updating the Forge loader, or changing any gravity-mechanic config. Gravitas² automation chains are built around vertical momentum and balanced platforms — losing that progress means re-engineering gravity-dependent builds from scratch, not just replacing a few blocks.
Use a cleaner All The Mods - Gravitas² path
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