in
Code:
alias selected {
  .timer.random 1 0 $+(game,$rand(1,2)) $chan
}

The alias is not on a channel. You've passed $chan on to the alias via the on text !on. That value($chan) is $1 for that alias.
Code:
alias selected {
  .timer.random 1 0 $+(game,$rand(1,2)) $1
}