Valve has yet to announce "Half-Life 3," which has been rumored for years. However, some are trying to create a sequel on their own and offer various variations on the theme of Episode Three.
Earlier this year, Jim_Partridge announced "Half-Life 2: All Good Things" and explained why many other modders failed to succeed. In his opinion, it's important to abandon dependence on others – to work alone:
Since 2019, I've watched other teams make big claims about their projects, showcase new assets, talk about complete engine overhauls, and so on – but all of them ultimately fail to release a final product. All, except for The Closure by a now acquaintance of mine named Leon. Leon, whose previous projects included Strider Mountain, released The Closure less than a year after [ex-Valve writer] Marc Laidlaw published the plot of Epistle 3 on social media. How did Leon manage to succeed where many other teams failed? The answer is simple. He was a lone map maker. No dependence on others. No need for meetings or coordination. Much like me, he had everything he needed to see the project through.
Recently, Jim_Partridge announced that he has almost finished the first draft of the Half-Life 2: All Good Things campaign. According to the modder, there are "only one and a half maps" left until a fully playable campaign that can be completed from start to finish. However, he warned that this is just the beginning: after completion, problematic areas may be identified that will need to be changed.
The release of the fan-made sequel Half-Life 2: All Good Things is scheduled for late 2026.