Well done puzzle game

Things you did right:

~Highscore menu
~Quality button
~Mute button
~Mode select
~Special tiles
~Tutorial

Things you did wrong:

~No Pause button
~No variation in bot amount (always four, you can do interesting things with three or two)
~No reaction other than death upon contact with more than one bot (for example, make one bot a teleporter).

Things you don't need but would make the game better:

~A song select
~Boss battles
~A plot
~Cutscenes