Unity Technologies is the company that developed the Unity game engine. This was used by, for example Hollow knight or Cuphead. While it was previously possible for developers to inexpensively use development tools for the medium of their choice, there have been changes in the last few months.
In fact, it is now mandatory for developments intended for consoles or stadia to have a “Pro license ”
For studios, purchasing these licenses is a significant hassle at a cost of $ 1,800 per year for each user of the tool. This measure has been in effect since June 30th, according to Unity Technologies, and will only affect projects started after that date. For the company, the use of Unity Pro
At Microsoft, if a decision has not yet been made, a representative of the Redmond company also spoke:
We will continue to work with our developer partners and game engine providers, including Unity, to find out how best to support developers on Xbox.
I’m not sure this answer is enough for some developers who might decide to skip a possible Xbox version of their game in order to keep development costs down.