Bandai Namco appears to have struck a well-timed combo with the release of the Tekken 8 demo in December.
According to Katsuhiro Harada, the hot-blooded long-time producer and director of the Tekken franchise, the demo's positive feedback from fans has resulted in a steady increase in pre-order sales ahead of the game's release.
According to Harada, the Bandai Namco gathered invaluable data from the demo, promising that the development will work hard to address all the issues reported and found during the demo.
There are several reasons why demos went from commonplace during the 90s and 2000s to becoming a rarity in recent years. A major factor is the negative impact demos can have on sales. The challenge is creating a demo that is exciting enough to encourage full game purchases but not so complete that it satisfies players' curiosity, deterring them from buying the full version.
Furthermore, many games spend some time in Early Access, offering a demo-like experience without the financial risk for developers. This is especially true for small-time and independent developers, where resources and time spent on creating a separate demo could detract from the final product.

