Instance entities are not included in all FGDs

[vrad-exe]

It was recently discovered that instances can be enabled in any Source game, but the unified FGDs haven't yet been updated to reflect this. (Unless you're intentionally leaving them out?) If you do change this, it might also be a good idea to add some sort of note in the entity description in normally-unsupported games, telling the user they need to add a GameData key to the gameinfo for instances to work.

[vrad-exe]

These are still missing from P1's FGDs.

[TeamSpen210]

P1 doesn't have them, I'm fairly sure.

[vrad-exe]

They work if you add a GameData key to gameinfo.txt pointing to the FGD.

[vrad-exe]

Still an issue, instances are functional in all Source 2013 games by adding GameData.