Alien: Isolation's downloadable content missions based on the original 1979 movie have captured the gaming public's attention and renewed the debate around pre-order incentives.

Yesterday, publisher Sega announced that gamers who pre-order Alien: Isolation will receive two bonus missions based on the 1979 Alien movie. Excitement around the announcement soon gave way to discussion around the dubious practice of ransoming content to drive up pre-orders.

Today, Sega has announced that the DLC is not for pre-order customers only, but will become available to all at a later date.

Sega issued the following statement:

"It's genuinely been great to see the reaction to The Crew Expendable and Last Survivor pre-order bonus content we announced yesterday and how excited you all are to re-experience those classic scenes from the original movie with our Alien. It's been absolutely amazing for us at the Studio.

"However, some of you have been asking if the two pieces of content are only available through pre-order or if we'll be releasing them at a later date as well.

"So, I can confirm today that we do plan to release both Crew Expendable and Last Survivor at a later date and we'll have more details for you guys on that shortly."

The primary detail will of course be cost. Pre-ordering secures the additional content at no extra charge. Gamers will need to weigh up whether what they've seen so far is worth taking a pre-order gamble on. Alien: Isolation looks very good, but the world has been fooled by Sega's slick Alien demos before.