add games like these, they arent very easy like they seem they are changed where like in 8 you need to combine 3 of 1 number to get to the next number and both only go up by 1 when combined.
(11) http://suki.ipb.ac.rs/11/
(8)   http://suki.ipb.ac.rs/8/
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Here are others, I havent tried.
(243)         https://243game.com/
(-512)        http://hgentry.github.io/-512/
(1597)       https://hummel.dev/1597/
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and then theres the insanly hard ones, these are the ones I could find, I still havent been able to beat them they would be fun to speedrun tho.
(2048-3D)      http://joppi.github.io/2048-3D/
(2048-4D)      http://huonw.github.io/2048-4D/
(16384 hex)     http://rudradevbasak.github.io/16384_hex/
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then theres 2048 versions that act the same.
(2048 Alphabet Version)   https://vdmitriyev.github.io/2048/
(2048 Pokemon)    https://filipekiss.github.io/2048/
(2048 Minecraft)    https://pepelluepe.github.io/
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THATS ALL THE ONES I COULD FIND LMAO

2048

Should we add smaller tiles for records like 512 or 128 or 256?

sWinTuZ