Random steam games popping up in my library.

[Robo]

The same thing happened to me with Magica: Wizard Wars, so It's not just you.

[Ad Bot]

[Rigel]

The same thing happened to me with Magica: Wizard Wars, so It's not just you.

Oh yeah, that happened to me too.

I just forgot about it since I never installed it.

[seargent227]

but Magicka: Wizard Wars is free?

[auzman466]

I got a free blockland in my stam. Also minecraft, dayzzzzzzz,and roblox free download edition.

these are not in any way related to the OP's situation
you probably got a key to add blockland to steam
minecraft has to be added as a non-steam game
dayz is already free (the arma II version, if you have arma II. it may work with arma II free)
roblox is already free to begin with, and has to be added as a non-steam game as well.

[Robo]

but Magicka: Wizard Wars is free?

I got the beta before it was even displayed in the store if I remember correctly, though I never installed it.

[Nonnel]

i would
games a pile of donkey

wtf you listen here

[Crispy_]

i would
games a pile of donkey

[McJobless]

i would
games a pile of donkey

Takes one to know one.