How to unlock isaac in the binding of isaac

So you want to unlock isaac, well this is how you do it.

Starting the unlocking

So first, you must purchase The Binding Of Isaac

then, you must open the game

after that, you must watch the opening cutscene (THIS IS IMPORTANT!!!!!!)
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Unlocking Isaac

So, you've opened the game, went through the opening cut scene, and now you should see Isaac sitting and crying on the floor with text that says: "The Binding of Isaac Rebirth"
/"The Binding of Isaac Afterbirth"/"The Binding of Isaac Afterbirth+"/"The Binding of Isaac Repentance"/"The Binding of Isaac Repentance+" (Depending on what DLC's you bought.) Once you are on this screen, press the spacebar once. Then, you should see three save files, all with the exact same crying Isaac you already saw. Press spacebar on one of the files.

Congratulations!!!!

You have now unlocked Isaac. Have fun playing the game now!!!