That's an absurd proposition for most people. Rolling out our own worked for Minecraft. It also may work for bigger companies (Frontier Developments, Bethesda?).
Successful releases using open-source engines are rare.
For the overwhelmingly majority, they are much better off just using one of the big game engines, even after paying them.
Successful releases using open-source engines are rare.
For the overwhelmingly majority, they are much better off just using one of the big game engines, even after paying them.