Minecraft 1.2.5 Java Version !!exclusive!!

You cannot upload a 1.2.5 world to Realms (it will fail conversion). However, you can convert a 1.2.5 world up to modern versions via incremental upgrades (1.2.5 -> 1.6.4 -> 1.12.2 -> 1.20+), but terrain generation will cause harsh chunk borders.

Do not play expecting a better experience than modern Minecraft. You will miss swimming, crawling, villager trading, and netherite. minecraft 1.2.5 java version