well it started with 16 buttons thought to easy then 20 then 25 lol but i spose it makes no diff just the dialog isnt 1,2,3..20 and so but if u think its still to easy because 1 second is the fastest you probs wanna go :P decimals are super fast but yeh if u think its still easy ill up da buttons to 30! :P comment and rate plz :P

menu * {
  .Game:dialog -m game game
}
dialog game {
  title "Game"
  size -1 -1 380 425
  option pixels
  button "1" 1, 5 5 70 70, disable                                                         
  button "2" 2, 80 5 70 70, disable 
  button "3" 3, 155 5 70 70, disable 
  button "4" 4, 230 5 70 70, disable 
  button "6" 6, 5 80 70 70, disable 
  button "7" 7, 80 80 70 70, disable 
  button "8" 8, 155 80 70 70, disable 
  button "9" 9, 230 80 70 70, disable 
  button "11" 11, 5 155 70 70, disable 
  button "12" 12, 80 155 70 70, disable 
  button "13" 13, 155 155 70 70, disable 
  button "14" 14, 230 155 70 70, disable 
  button "16" 16, 5 230 70 70, disable 
  button "17" 17, 80 230 70 70, disable 
  button "18" 18, 155 230 70 70, disable 
  button "19" 19, 230 230 70 70, disable 
  button "5" 5, 305 5 70 70, disable 
  button "10" 10, 305 80 70 70, disable 
  button "15" 15, 305 155 70 70, disable 
  button "20" 20, 305 230 70 70, disable 
  button "21" 21, 5 305 70 70, disable 
  button "22" 22, 80 305 70 70, disable 
  button "23" 23, 155 305 70 70, disable 
  button "24" 24, 230 305 70 70, disable 
  button "25" 25, 305 305 70 70, disable 
  text "Timer:" 30, 5 397 30 20
  edit "" 26, 40 395 50 20
  button "Set" 28, 95 395 50 20
  text "Score:" 27, 200 395 30 20
  edit "" 29, 235 395 50 20, read autohs
}
on *:load: { set %score 0 
}
alias gamme { set %svt $rand(1,25) | did -b game 1-25 | did -e game %svt
}
on *:DIALOG:game:init:0:{
  timera 0 %ttme gamme
  did -ra $dname 29 %score
  did -ra $dname 26 %ttme
}
on *:dialog:game:close:*:{ 
  .timera off
}
on *:DIALOG:game:sclick:*:{
  if (%svt = $did) { set %score $calc(%score + 1) | did -b game 1-25 | did -ra $dname 29 %score }
  if ($did = 28) { set %ttme $did(26) | .timera off | .timera 0 %ttme gamme }
}