Because you have no justification, you can't declare war, and the tutorial cannot continue. A part of the tutorial has you play as Belgium and declare war on France, but expansion packs introduce having to justify wars, which the tutorial does not account for. Victoria 2 has the tutorial become unwinnable after expansion packs are installed.Unfortunately, if those systems are already owned by enemies, your bombardment of the inhabitable planet may lead to it being out of your Terraformable range when the dust clears. In Sword of the Stars some scenarios require you to colonise certain systems.The only solution is to fire the council altogether.

Due to a bug in Crusader Kings II's Conclave Downloadable Content, Player Characters ruling nomadic realms sometimes end up in a Catch-22 Dilemma where the members of their realm council dislike them because they want more land, then disagree with granting vassal khans (usually including themselves) more land, because they dislike the PC due to wanting more land.

This means the game literally has no win conditions anymore and becomes a giant sandbox. Under the advanced settings when creating a new game, you can disable any of the game's multiple win conditions - you can even disable all of them, leaving only Score Victory (whoever has the most points when the turn limit runs out).

Civilization VI has a strange example, in that it happens in the game setup.

Even if the player has to work to create an unwinnable state, the important criteria are that the state wasn't meant to be there and it renders winning impossible. While many of these examples can be stumbled upon accidentally, others require such complicated or counterintuitive actions to trigger that it's highly unlikely most players would stumble upon them during normal gameplay. Please note that the 'unintentional' aspect of this trope pertains to the developers, not the players.

When cases like these occur, the game has become Unintentionally Unwinnable. They may happen because of some random glitch the developers never caught, or they may be unintended consequences of a design decision. Still, unwinnable situations do crop up in modern games, though generally not because the creators intended for them to be there. While unwinnable situations were once somewhat common (and intentional) in video games - particularly in older Adventure Game titles - today they're generally eschewed by all but the most mean-spirited games.

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