While it certainly isn't the most difficult game to play on Coolmath Games (that title probably goes to World's Hardest Game), Brain for Monster Truck is definitely a challenge. Players will need to use patience and elite puzzle-solving skills in order to make it through every single level. However, if you take your time and really try to plan ahead before each level, then you will likely have great success in this game. Remember to use the eraser tool if you end up making a mistake and need to take it back!