Comment by inigyou

Microsoft purchase was during 1.8. large-scale terrain structure completely changed in 1.7. 1.5 completely changed the redstone meta. 1.4 completely changed the villager meta as you could now zombify and cure villagers and more changed meta because beacons existed. 1.3 added villager trading, making mining obsolete for some people. 1.3 also overhauled the internal structure of singleplayer so that you can have network latency in singleplayer. 1.2 increased the world height, making your max height builds no longer impressive. Beta 1.8 added hunger so you can't just exist indefinitely, and endermen who aggressively stole blocks in that version. Beta 1.6 fixed several fun glitches.