[Spoiler]

[Masterski]

[spoiler=]Spoiler does not work.[/spoiler]
[spoiler]Not even like this.[/spoiler]

[magellan]

It needs to have a title after the = within ""
[spoiler="like this"]see?[/spoiler]

[Masterski]

Nope, still see the code.

[phpbbadmin]

[Masterski]

Yea works now, great. Btw may I suggest, if possible, to change spoiler to appear like this, you know, with black background and black letters(Looks like theres no background colour option) right in the text, that are revealed on mouse over or highlight... Im sure you know what I mean. (Not sure if it's possible with this kind of forums.) (Or just add background colour option.)
For the time being, its good as it is.

[phpbbadmin]

Yes, the tag should be simpler. But I consider this still fixed.