Troubleshooting Player - TheShubham99/Terasology GitHub Wiki
The most common cause for game crashes is older video cards, especially Intel HD Graphics on laptops. Make sure you have the very latest graphics drivers available.
If you're using a laptop that has a discrete NVIDIA GPU and Intel HD Graphics, the game may be attempting to run on the latter, causing a crash. To make the game use the discrete GPU,
Select Program Settings, then navigate to wherever the Terasology executive file is located and select it.
In the processor selection dropdown, choose High-performance NVIDIA processor and click Apply.
You may run out of memory if your system doesn't have much available or you run the game with too little memory assigned and too high view distance. Especially with a 32-bit system or Java (has failed on even taking large screenshots in the past)
To run with increased memory you can launch via command prompt / terminal with something like: java -Xms128m -Xmx2048m -jar libs/Terasology.jar which will assign a max of 2 GB (but crash with a 32-bit Java! Can't assign more than around 1.5 GB)