You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what is the top-selling videogame of all time?" whose answer is Tetris.
Each document should contain about 30 words, and these documents should contain useful information.

Query: top-selling videogame of all time
Useful Output:

Doc 1: Minecraft has sold more than 238 million copies, making it the most-sold video game of all time. Minecraft is a sandbox-style game that had a
Doc 2: Tetris is one of the best selling video games of all time, something helped along by Nintendo's decision to bundle their first handheld with a
Doc 3: The best-selling video game of all time goes to the timeless classic known as Tetris. IGN says 520 million copies of Tetris have been sold,
Doc 4: Top 10 Best-Selling Video Games Of All Time · 1. Tetris -- 520 million (pack-in sales included) · 2. Minecraft -- 300 million · 3. GTA 5 -- 210
Doc 5: Best-selling video games in history · 1 Tetris · 2 Minecraft · 3 GTA V · 4 Wii sports · 5 PUBG: Battlegrounds · 6 Mario Kart 8. One of the great