An employee at Forza Horizon 3 developer Playground Games accidentally green-lighted the wrong update file for PC players, who found themselves downloading a whopping 53GB download that turned out to be an unencrypted future build (.37.2) of the entire game intended for developers. Motherboard reports: Naturally, players who'd managed to download it yesterday had a field day leaking the information within, right down to massive posts on Imgur showing all the new cars and forum threads detailing the Porsches thought to come in an future unannounced pack. Since Forza Horizon 3 requires a constant online connection and works off of a constantly refreshing save file, anyone who played the new patch on PC found themselves slapped with an error saying their Forza profiles were no longer available. Playing it with the new build would thus effectively mean starting a new game from scratch, even if they'd dumped dozens of hours into Forza Horizon 3 since its release last September. But starting over is exactly what players shouldn't have done. The best thing they could do was shut down the game, walk away, and wait for a fix. "PC players who completed the download of .37.2 and then started a new game save will have a corrupted saved game," wrote Brian Ekberg, Forza's community manager, in a forum post. "Avoid creating a new saved game on .37.2, and only play on .35.2 to avoid this issue. As long as you have an existing save and have not created a new one on .37.2, your saved game will work correctly once the update is available."