When most people hear the term 'alternative ending', they think of DVD extras sections, but they're actually more common in video games these days. Many blockbuster releases have several possible conclusions; the outcome of the story varying based on the player's performance and the decisions they made throughout.
The concept of alternative endings was popularised by Square in the mid-1990s when it launched its SNES hit Chrono Trigger, a game with 13 possible conclusions - a figure that was unheard of during the 16-bit era. This struck a chord with players, many of whom replayed the game multiple times in a bid to experience all of its outcomes.
Since then, alternative endings have become far more common. Some are straightforward, a simple case of taking a different path at a crossroads, but others have been well hidden or are challenging to unlock.
There are completionists out there who won't rest until they've played a game to its every possible conclusion, but even they may not be aware of the top-secret endings classic games have been concealing.