Starcraft

This is my absolute favourite cheese works in all m u ^^
Note that this only works vs decent player who knows the best bo for vs t m u and does it. If he is bad enought to do 2gate in pvt well then your screwed.
But to the strategy:
Send one of orginal 4scvs to scout. Pump scvs. When unit count is 7/10 send anhoter scv to scout too. Note that when scouting you must be carefull not to let your opponent see that early scout. When your scv gets up the ramp dont go straight to his cc/nexu (in case his z you can ofc just see if there is creep nothaving to check his hatch. Be extra careful for ovies). Instead go around so that you aproach his mineral line from side. On the second you see a probe/scv there maining click you scout back and hope he didnt notice it. (or if you want to do the emperor edition you dont see units at all just check if minerals have 1500. if not your opponent is there. however this takes a bit too much time imo and it doesnt happen often that your opponent would notice that scv). Then when you have found him send your scv out of his base. Also send other scout scv there. Now depending on map build barracks there so that he cant see them with scout unit (for example: on azalea to his exp, on PA behind nat minerals, on rh3 in front of his exp). At this point you have 10/10. Make other barracks next to first and when you have 100 make suply. Scv that finished first rax goes to scout his base. When 2marines are ready click 5-10 scvs to mine for his mineral patch, so that they go throught any units and that way clear the ramp for your marines. Vs terran and zerg you dont have to send any scvs. When scvs arrive, this should be when you have 5marines (scv that finished starts second suply)attack.

However this as most cheeses have one weakness: if your opponent scout you too early (chance is 1:2) he will play safe and you are in bad position. If you see a toss making zealots out of 1gate you should be able to kill him. If terran makes bunker right after his rax is ready try to attack before its ready and keep rallyig marines to his main. If zerg does early pool instead of f e you are pretty gg. Anyways if your opponent isnt ready for this he will lose badly.