Speaking to Axios, Unity spokesperson Marc Whitten said he estimated only 10 percent of developers using the engine would be hit. The backlash to these plans has been unanimous, however.

UPDATE Sept. 20, 2023: Terraria developer Re-Logic has also thrown its support against Unity's policy changes, committing to donating $100,000 to two emerging game engines, and an additional ...

Developers who use Unity's free services will be charged $0.20 (£0.16) every time their game is downloaded - but only if the game makes $200,000 in 12 months and is downloaded over 200,000 times.