Imagine spending countless hours proving it is possible to complete Factorio in a 12x9 world only to find out afterwards that since the Spidertron was added it is actually possible to do it in 11x9
(Spidertrons can stand on top of other buildings and have a large carrying capacity, so you can use them like chests to hold all the items you need to launch the rocket while still having the ability to place buildings on all tiles.)
Amusing execution though. 😀