Undertale is a game made by Toby Fox in 2015. Undertale gameplay is some what similar to typical rpg gameplay at first ,however as you play more undertale gameplay you will begin to realise that it is a significantly different game than any other game to date. This is a huge reason why undertale has become such a popular rpg game. Undertale secrets are very popular as many people want to learn about the game undertale's secerts. Some undertale secrets are very hidden, while others are easier to find. You can watch our top 10 lists here:.