Valve removed the demo version of "Left 4 Dead" when it released the full game on Steam. However, Steam allows players to get full refunds in case they do not like a game. In case of dissatisfaction, using the refund feature gives players a free way to evaluate the game.
As long as the player sends the request within two weeks of purchase and with less than two hours of playtime in the game, Valve accepts all refund requests. As such, a player can test "Left 4 Dead," see how it runs on his system and demand a refund if it performs badly. Likewise, Valve considers not liking the game a valid reason for refunds.
To get a refund, click Help on the menu bar of Steam. Click Steam Support and select A Purchase. Click Left 4 Dead from the list and select a reason for refund. Then click I'd Like to Request a Refund and pick the original purchase method or your Steam Wallet as the refund target. Valve states that refunds can take up to seven days to process.
"Left 4 Dead" is a co-op first-person shooter that pits four players against an army of zombies and monsters. The game features a wide variety of maps, from abandoned cities to rural towns. The game has Steam achievements, full control support, Steam leaderboards and Valve Anti-Cheat.