Based on various details there are over 800 realities 'known' with information on only about 220 of them. The number of realities for Classic ( Homeline-2) and 4e is listed on the Known Realities page. It is being updated to bring it in line with the GURPS 4th edition Infinite Worlds book and subsequent releases. This topic is based on the lists formerly posted as Timeline Map for the Infinity Unlimited Campaign and Timeline Map, Infinite Worlds Wiki both of which are preserved thanks to Internet Archive. When possible the TL is updated to 4e (using the lowest TL possible) and in bold. Due to the changes in Tech Level between Classic and 4e the TLs for 8+ from Classic material is not quite right. Tech Levels for uninhabited worlds are listed 'NA'. Some timelines have moved quantum and a few even changed 'local present' in 4th edition those with only Classic sources are marked with '*'. The number known is the number of timelines known to Homeline. This coupled with changes in the GURPS TL scale means that TLs from sources before 2004 may not be at the same TL in 4e. Note that GURPS 4e (2004) is not entirely consistent on how it uses the '^' ( superscience) notation and '^' didn't exist in GURPS Classic at all. Most of GURPS settings can be easily adopted as part of the Infinite Worlds settings which includes Infinity Unlimited. There are hundreds or more alternate worlds in the GURPS Infinite Worlds multiverse. 5 Realties not formally listed as part of the Infinite Worlds setting.

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